Milwaukee PH55 Waterproof pH & Temperature Tester with Replaceable Probe – High Accuracy & Durability The Milwaukee PH55 pH & Temperature Tester is a professional-grade device designed for accurate and reliable pH measurement. With ±0.1 pH accuracy, automatic temperature compensation (ATC), and a waterproof design, this tester is perfect for hydroponics, aquariums, pools, and laboratory use. The replaceable probe extends the device’s lifespan, making it a cost-effective choice for long-term pH monitoring. Why Choose the Milwaukee PH55? ·       Accurate Measurements – pH range -2.0 to 16.0 with ±0.1 accuracy. ·       Dual Functionality – Measures pH & temperature simultaneously. ·       Waterproof & Durable – Designed for harsh environments. ·       Replaceable Probe – Extends the tester’s lifespan for long-term use. ·       Automatic Temperature Compensation (ATC) – Ensures accurate readings in any condition.  Proper Care & Maintenance All pH sensors have a limited life and response time gets longer with age. Properly maintaining your pH pen tester will give you fast, accurate results for longer. So, be sure to order the Milwaukee pH Maitenance Kit code PH-Main at checkout time! This will be needed to help clean and condition the pH electrode before use! 1. Always store with the cap full of buffer or storage solution MA9015 not water. 2. Clean your Tester regularly by soaking in cleaning solution MA9016. 3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH sensor. 4. Gently stir the Tester in the sample for a faster result. Order the Milwaukee PH55 Today! A reliable and durable pH tester for hydroponics, aquariums, and water testing!

Milwaukee EC60 PRO Waterproof EC/TDS/Temperature Tester – Reliable Water Quality Control Wherever You Measure From hydroponic nutrient tanks to irrigation systems, aquariums, and environmental water sources, understanding what’s dissolved in your water is essential for making the right decisions. Electrical conductivity (EC) and total dissolved solids (TDS) offer immediate insight into nutrient concentration, salinity, and overall water quality – but only when measured accurately and consistently.       The Milwaukee EC60 PRO Waterproof EC Tester with Replaceable Probe is designed for growers, water quality professionals, and serious hobbyists who need dependable measurements in real-world conditions. Compact, rugged, and easy to use, the EC60 delivers fast and precise EC, TDS, and temperature readings in one handheld instrument, making it a trusted companion for both field and indoor applications. Built to handle frequent use in wet and demanding environments, the EC60 combines professional-grade performance with user-friendly operation. Its waterproof housing, automatic temperature compensation, and replaceable EC probe ensure long-term reliability and accuracy – helping you monitor, adjust, and maintain optimal water conditions with confidence.   Designed for Accurate, Everyday Water Testing The EC60 PRO goes beyond basic testers by offering three key measurements in one device: EC, TDS, and temperature. Whether you’re fine-tuning nutrient strength for plant growth or checking water quality before use, the EC60 provides immediate feedback when it matters most. With automatic calibration, a clear LCD display, and a fast-responding EC probe, the EC60 simplifies routine testing while maintaining professional accuracy. The replaceable probe design extends the life of the meter and makes it a cost-effective solution for users who test frequently or work in harsh conditions.   Why Choose the Milwaukee EC60 PRO? 3-in-1 Measurement Capability Measures electrical conductivity (EC), total dissolved solids (TDS), and temperature in a single, compact tester. High Accuracy & Reliability Designed for consistent, repeatable results with automatic temperature compensation for dependable readings across varying conditions. Replaceable EC Probe Extends the lifespan of the tester and ensures long-term measurement accuracy without replacing the entire unit. Automatic Calibration Simple one-point automatic calibration makes setup fast and reduces the risk of user error. Waterproof & Durable Design (IP65) Built to withstand splashes, humidity, and challenging field environments. Clear, Easy-to-Read Display Large LCD screen allows quick reading of results, even during on-site testing. Portable & User-Friendly Lightweight, ergonomic design makes it ideal for handheld use in greenhouses, labs, or outdoor locations.   Applications Thanks to its versatility and rugged design, the EC60 PRO is suitable for a wide range of water testing applications: Agriculture & Hydroponics Accurate EC and TDS measurements are critical for managing nutrient solutions. The EC60 helps growers maintain optimal nutrient concentrations, avoid over-fertilization, and promote healthy plant growth. Irrigation Water Quality Monitoring the conductivity of irrigation water helps prevent salt buildup in soil and growing media, protecting crops and improving long-term productivity. Aquariums & Aquaculture Stable water conditions are essential for aquatic life. The EC60 allows aquarists and fish farmers to monitor dissolved solids and temperature, supporting healthier aquatic environments. Environmental Water Testing Ideal for field testing of rivers, lakes, and groundwater, the EC60 supports quick conductivity assessments as part of environmental monitoring programs. Water Treatment & Filtration Use the EC60 to check conductivity and TDS levels before and after filtration or treatment processes, verifying system performance and water quality. Pools, Spas & General Water Testing Helps monitor overall dissolved solids levels that impact water balance, comfort, and equipment longevity. Laboratories & Education A practical tool for demonstrations, routine lab work, and water quality experiments requiring fast, reliable EC and TDS readings.   Proper Care & Maintenance Conductivity meters generally maintain accuracy longer than pH meters, but proper care of the EC probe is still essential for consistent performance. Probe Care Always rinse the probe with clean water after each measurement to prevent residue buildup. Avoid wiping the probe aggressively, as this may damage the sensing surface. Storage Store the tester in a clean, dry place when not in use. Ensure the probe is clean before storage to prevent contamination or scaling. Calibration Calibrate the EC60 regularly using the appropriate EC calibration solution. Always recalibrate after cleaning the probe or when high accuracy is required. Probe Replacement Over time, EC probes may wear due to frequent use or exposure to harsh solutions. The EC60’s replaceable probe allows you to restore accuracy easily without replacing the entire instrument.   Monitor your water with confidence using the Milwaukee EC60 PRO – a compact, durable, and accurate EC/TDS/Temperature tester built for everyday professional use.

Milwaukee MW102 PRO+ 2-in-1 pH and Temperature Meter with ATC High Precision pH Testing for Hydroponics, Agriculture, Aquaculture, Brewing & Wine making, Swimming Pools, Laboratories & Industrial Use The Milwaukee MW102 PRO+ is more than just a pH meter—it’s a trusted companion for professionals who demand precision. Whether you're a brewer perfecting your craft, a winemaker refining flavor, a hydroponic grower optimizing plant health, or a farmer ensuring soil balance, the MW102 PRO+ delivers accurate and reliable results every time. With ±0.02 pH precision and automatic temperature compensation (ATC), this lab-grade meter adapts to real-world conditions, providing dependable measurements even in the most demanding environments. Built for accuracy, durability, and ease of use, it’s the go-to choice for those who take quality seriously—because every drop counts. Why Choose the Milwaukee MW102 PRO+? Exceptional Accuracy: Measures pH from -2.00 to 16.00 with ±0.02 accuracy. Automatic Temperature Compensation: Includes a stainless steel temperature probe. Tough & Reliable: Designed to withstand tough environments. Low Maintenance: Gel-filled, double junction lab-grade pH electrode (SE220). Long Battery Life: Up to 300 hours of continuous use.    Proper pH Meter Care & Maintenance To maintain the accuracy and longevity of your MW102 PRO+, follow these best practices: Cleaning & Storage: Keep the probe hydrated in MA9015 storage solution. Clean regularly with MA9016 cleaning solution to prevent residue buildup. Avoid storing in tap or DI water, as it damages the electrode. Calibration: Regular calibration ensures precise results. Always calibrate after cleaning or extended storage. Order the Milwaukee MW102 PRO+ Today! Ensure accurate, reliable pH monitoring for brewing, winemaking, and hydroponics. Shop now and experience the Milwaukee difference!          

Milwaukee MW301 PRO Conductivity Meter – Precision for Growers & Water Quality The Milwaukee MW301 PRO Conductivity Meter is a precision tool designed to meet the needs of various industries, including agriculture, hydroponics, aquaculture, water treatment, food industry, and more. With its automatic temperature compensation (ATC) and portable, user-friendly design, it delivers fast, accurate measurements that help optimize processes like fertilizer application, nutrient management, and water quality testing. Whether you’re working with plants, aquatic life, or water systems, the MW301 ensures that every measurement is precise, empowering you to achieve better results and maintain optimal conditions. Why Choose the Milwaukee MW301 PRO? Wide Measurement Range: Measures 0 to 1990 µS/cm with 1 µS/cm resolution. Automatic Temperature Compensation (ATC): Ensures precise readings across varying conditions. Fast, Easy-to-Read Display: Large digital LCD screen for quick results. Reliable Accuracy: ±2% Full Scale (FS) for dependable performance. Durable & Portable: Lightweight and rugged with 300 hours of battery life. Supplied with Conductivity Probe: Includes a 3.3-foot cable and calibration solution. Proper Meter Care & Maintenance Best Practices for Long-Term Performance: Rinse the Probe After Each Use: To prevent residue buildup and ensure accurate readings, rinse the probe with clean water after each use. For optimal cleanliness, use the cleaning solution to remove any stubborn residues or build-up. Calibrate Regularly: For consistent accuracy, calibrate your meter regularly. Use  calibration solutions to ensure precise calibration for different ranges. Store the Probe Properly: When not in use, store the probe in a clean, dry place. For extra protection and maintenance, consider storing it in the storage solution, which helps keep the probe in optimal condition. Replace Calibration Solutions Periodically: To maintain precision, replace your calibration solutions every 6 months. Use the recommended calibration solutions to ensure that your meter remains accurate over time. By following these best practices and using the appropriate Milwaukee solutions, you can ensure that your meter continues to perform at its best for long-term, reliable use. Order the Milwaukee MW301 PRO Today! Take control of your water quality and nutrient management like never before with the Milwaukee MW301 PRO Conductivity Meter. Don’t settle for less—experience the Milwaukee Instruments advantage and elevate your operations with accurate, easy-to-use EC measurements.

*Free MA955 solenoid valve will be added to your order automatically after you finish your purchase.   Milwaukee MC122 pH Controller with Electrode – Continuous pH Monitoring & Control Made Easy Take the guesswork out of pH regulation with the Milwaukee MC122 pH Controller – a trusted tool designed for precision, automation, and peace of mind. Whether you're growing plants hydroponically, maintaining a healthy aquarium, or fine-tuning a water treatment system, the MC122 offers continuous pH monitoring and on/off control, so you can set it and forget it. Equipped with a high-accuracy pH electrode, adjustable setpoint, and LED alarm system, the MC122 gives you full command over your pH environment. Once connected to a dosing pump or CO₂ system (not included), it becomes an automated solution that helps maintain your ideal pH range – 24/7. From hydroponic growers to aquarists, lab technicians to industrial operators, the MC122 delivers reliable control in a compact, easy-to-use unit trusted worldwide.   Why Choose the Milwaukee MC122? Continuous Monitoring – Real-time pH readings with automatic regulation. Precision Control – Set your ideal pH range (setpoint adjustable from 5.5 to 9.5 pH). Built-In Alarm LED – Visual alerts when pH is out of range. Compact & Easy to Install – Wall-mountable, durable housing. Includes Quality pH Electrode – Ready to go right out of the box. BNC Connection – Compatible with a wide range of pH probes. Ideal for Automation – Control acid/base dosing or CO₂ injection with ease.  Proper Care & Maintenance To keep your MC122 performing at its best: Always store the pH electrode in storage solution (not water). Clean the electrode regularly using a cleaning solution (like MA9016). Calibrate often using pH buffer solutions (like MA9004 and MA9007). Replace the electrode as needed to maintain accurate readings. We recommend adding the Milwaukee pH Maintenance Kit (PH-Main) to your order to support cleaning, calibration, and storage from day one.   Automate with Confidence. Trust Milwaukee. Whether you're growing, brewing, farming, or treating water – the Milwaukee MC122 is your reliable partner for pH control. Designed to simplify your workflow and protect your results, it's the perfect balance of performance and peace of mind.

Milwaukee MC125 PRO 2-in-1 Digital pH / ORP Controller – Automated pH Monitoring & Control for Aquariums, Hydroponics and more Take your pH management to the next level with the Milwaukee MC125 pH Controller. Whether you're managing a hydroponic system, maintaining an aquarium, working in a laboratory, or overseeing industrial processes, the MC125 is designed to provide continuous, real-time pH monitoring and on/off control. With its precision, durability, and easy-to-use features, it ensures that pH levels are always within the desired range – automatically. Equipped with a high-quality pH electrode and intuitive controls, the MC125 helps you monitor and adjust your pH environment without manual intervention. From aquariums to water treatment systems, the MC125 ensures accurate pH regulation, offering peace of mind to professionals and hobbyists alike. The Milwaukee MC125 pH Controller is the go-to solution for anyone who needs reliable, automated pH management. Whether you're in agriculture, aquaculture, water treatment, or manufacturing, this controller takes the guesswork out of pH regulation, providing peace of mind and improving efficiency. Its easy-to-use design, combined with precision control and automation capabilities, makes the MC125 a trusted tool for professionals across many industries.   Why Choose the Milwaukee MC125? • Continuous pH Monitoring – Always keep track of your pH levels with real-time readings. • Precise Control – Set the ideal pH range with adjustable setpoints. • Built-in Alarm LED – Visual alerts when pH exceeds the set range. • Compact & Easy to Install – Durable, wall-mountable design for any space. • Includes pH Electrode – Ready to use out of the box. • Versatile Compatibility – BNC connection works with a variety of pH probes. • Ideal for Automation – Integrate with dosing pumps, CO₂ systems, or other pH-adjusting devices.   Proper Care & Maintenance To ensure the longevity and accuracy of your MC125 pH Controller: Always keep the pH probe in storage solution (not water) when not in use. Clean the probe regularly using a cleaning solution (such as MA9016). Calibrate the system frequently using pH buffer solutions (like MA9004 and MA9007) to maintain precision. Replace the probe as needed to ensure consistent and accurate pH readings. We recommend adding the Milwaukee pH Maintenance Kit (PH-Main) to your order for comprehensive support with cleaning, calibration, and storage from day one.   Automate with Confidence. Trust Milwaukee. Whether you're growing, brewing, treating water, or working in industrial processes – the Milwaukee MC125 is your trusted partner for precise pH control. Designed to simplify your process and provide reliable results, it combines performance and peace of mind for your daily operations.

Milwaukee MW801 PRO 3-in-1 Low Range pH, EC, TDS Combo Meter with ATC – Precision & Convenience in Water Analysis   The Milwaukee MW801 PRO 3-in-1 Combo Meter is an advanced solution for professionals who require precision and efficiency in their water and nutrient analysis. Engineered to measure pH, Electrical Conductivity (EC), and Total Dissolved Solids (TDS) with a single device, this meter is ideal for a wide range of applications, including drinking water analysis, aquaponics, aquariums, hydroponics, and food production. Offering fast and accurate results, the MW801 PRO is equipped with automatic temperature compensation (ATC) to ensure reliable readings under varying environmental conditions. Designed for both durability and portability, this versatile meter is the perfect choice for anyone needing a comprehensive tool to manage water quality and nutrient levels across diverse industries. Why Choose the Milwaukee MW801 PRO? 3-in-1 Functionality: Measures pH, EC, and TDS with one meter and a single probe. Automatic Temperature Compensation (ATC): Ensures accuracy in all environments. Simple Calibration: Single-point manual calibration for both pH and EC. Rugged & Reliable: Durable design with a replaceable SE600 probe for long-term use. Lightweight & Portable: Weighs just 640 g and fits comfortably in hand. Large, High-Contrast Display: View measurements quickly with an easy-to-read digital screen. How to Use the MW801 PRO Calibrate with standard buffer solutions: Before using the MW801 for testing, it’s important to calibrate the meter using standard buffer solutions that are specifically designed for pH and EC calibration. Calibration ensures the accuracy of your readings by aligning the meter’s measurements with known reference values. Always calibrate your meter at least once a month or more frequently, depending on usage, to ensure precise results. Submerge the probe in the water or nutrient solution: Place the probe of the MW801 directly into the water or nutrient solution you are testing. Ensure that the probe is fully immersed in the liquid to get an accurate reading. This will allow the sensors in the probe to measure the pH, EC, and TDS levels of the solution effectively. Gently stir for an accurate reading: To ensure the most accurate and consistent results, gently stir the probe in the water or nutrient solution. Stirring helps distribute the solution evenly around the probe, preventing localized imbalances in the solution that could lead to inaccurate readings. It also helps eliminate air bubbles that may form around the probe, which can interfere with the measurement process. Adjust pH and nutrient levels as needed: After taking the reading, compare the results with the desired values for your specific plants or system. If the readings are out of range, use the appropriate pH adjustment solutions or nutrient additives to bring the levels into the optimal range. Regular monitoring and adjusting of pH and nutrient levels is crucial to maintaining a healthy growing environment for plants. Clean and store the probe properly for longevity: After each use, clean the probe to ensure that it remains free of any residue or contaminants that could affect future measurements. Always store the probe in a buffer or storage solution to keep it in good condition and prevent it from drying out or becoming damaged. This helps maintain the longevity and accuracy of the probe over time.   Proper Meter Care & Maintenance Essential Tips for Long-Lasting Performance: Store the probe properly in buffer or storage solution (not water): After use, always store the probe in a proper storage solution, not in water. Storage solutions are specifically designed to keep the probe’s sensors moist and functional, whereas water can cause the probe to dry out or corrode over time, compromising its effectiveness. Using a storage solution preserves the accuracy of your readings and ensures the probe is always ready for use. Clean regularly by soaking in pH and EC cleaning solution: Regular cleaning is vital for maintaining the performance of your MW801. Soak the probe in a pH and EC cleaning solution to remove any buildup of dirt, oils, or salts that could interfere with the meter’s readings. Over time, residue can accumulate on the probe’s sensors, leading to inaccurate results. Cleaning the probe after each use (or at least weekly, depending on usage) helps maintain its sensitivity and reliability. Calibrate after cleaning and before testing to maintain accuracy: Cleaning can slightly alter the probe’s performance, so it's important to recalibrate the meter after cleaning. Calibration ensures that the meter is still giving you accurate readings, especially if there are any slight changes in sensor response due to cleaning. Always calibrate the meter before taking measurements to ensure that the results are reliable. Gently stir the probe in the sample for the most reliable results: As mentioned in the usage instructions, gently stirring the probe in the solution ensures that the reading is consistent and accurate. It also helps avoid air bubbles or local temperature variations that can lead to discrepancies in the readings. This simple step ensures that your results are as precise as possible, whether you’re measuring pH, EC, or TDS.   Order the Milwaukee MW801 PRO Today! Whether you're optimizing nutrient levels in your hydroponic system, ensuring safe water conditions in aquariums, or maintaining consistency in food and beverage production, the Milwaukee MW801 PRO 3-in-1 Combo Meter is your trusted tool for precise, fast, and reliable pH, EC, and TDS measurements.  

Milwaukee MW802 PRO 3-in-1 pH, EC, TDS Combo Meter – Precision & Convenience in Water Analysis The Milwaukee MW802 PRO 3-in-1 Combo Meter is the ultimate solution for measuring pH, Electrical Conductivity (EC), and Total Dissolved Solids (TDS) with a single, highly efficient device. Engineered with precision and designed for maximum convenience, this portable meter is an essential tool for professionals across various industries. Whether you’re managing the delicate balance of hydroponic systems, aquaculture, or food production, the MW802 PRO provides fast, reliable results. Its advanced features, such as Automatic Temperature Compensation (ATC), ensure accurate measurements in any environment, whether in the lab, field, or production site. Hydroponic growers and aquaponics enthusiasts rely on it for real-time monitoring of nutrient solutions, helping them achieve optimal plant health and yields. Greenhouses and agricultural sectors use it to fine-tune soil and water conditions, promoting healthy crop growth while maintaining cost-effective resources. In aquaculture, the MW802 PRO plays a crucial role in monitoring water quality for aquatic life, ensuring ideal conditions for fish farms or aquarium setups. With its versatility, it also serves environmental scientists and water treatment specialists in analyzing water quality in natural bodies or treatment plants. In food production, manufacturers can use it to monitor processes requiring precise water conditions. From research laboratories to industrial water treatment facilities, the MW802 PRO is a trusted ally in measuring pH, EC, and TDS levels, providing confidence in the integrity of the water and solutions critical to each industry. The MW802 is a must-have tool for professionals who demand precision and efficiency in their water analysis.   Why Choose the Milwaukee MW802 PRO? 3-in-1 Functionality: Measures pH, EC, and TDS with one meter and a single probe. Automatic Temperature Compensation (ATC): Ensures accuracy in all environments. Simple Calibration: Single-point manual calibration for both pH and EC. Rugged & Reliable: Durable design with a replaceable SE600 probe for long-term use. Lightweight & Portable: Weighs just 5.8 ounces and fits comfortably in hand. Large, High-Contrast Display: View measurements quickly with an easy-to-read digital screen. How to Use the MW802 PRO Calibrate with standard buffer solutions Calibration is a crucial step in ensuring that the MW802 provides accurate readings. To begin, you’ll need to use standard calibration solutions with known pH, EC, and TDS values. These solutions will help set the meter to give precise readings for your specific measurements. Calibration should be performed regularly, especially if the meter is used frequently or exposed to harsh conditions. It's a good practice to calibrate before each testing session to guarantee the most accurate results. Submerge the probe in the water or nutrient solution After calibration, place the meter’s probe into the sample you intend to test, whether it’s water, nutrient solution, or soil mixture. Make sure the probe is fully submerged in the sample for consistent measurements. For nutrient solutions or water, ensure that the probe is immersed deep enough to measure the entire solution, allowing for accurate EC, pH, and TDS readings. Gently stir for an accurate reading Gently stir the probe within the sample to ensure the meter gets an even, stable reading. Stirring helps to distribute any inconsistencies in the solution, such as localized differences in pH or nutrient concentration, ensuring that the reading you get is representative of the entire sample. Stirring should be done slowly and carefully to avoid damaging the probe or disrupting the sample too much. Adjust pH and nutrient levels as needed Based on the readings provided by the MW802, you may need to adjust the pH, EC, or TDS levels of your solution. If, for example, the pH is too high or too low, you can add pH up or pH down solutions to bring it into the desired range. For EC or TDS adjustments, add the appropriate nutrient solution to ensure that plants receive the necessary levels of minerals and nutrients. Clean and store the probe properly for longevity After each use, clean the probe thoroughly to avoid the buildup of dirt, salts, or other contaminants. Proper cleaning ensures that the probe remains accurate and prevents it from becoming clogged, which could affect its readings. Once cleaned, store the probe in an appropriate solution (such as a buffer or storage solution) to keep it hydrated and prevent any damage. Avoid storing it in just water, as this can lead to contamination and shorten the lifespan of the probe.   Proper Meter Care & Maintenance Essential Tips for Long-Lasting Performance: • Store the probe properly in buffer or storage solution (MA9015, not water) Storing the probe in a buffer or storage solution ensures it remains moist and calibrated, extending the lifespan of the probe. Never store it in pure water, as it can cause the probe to dry out, leading to inaccurate readings and damage over time. Buffer solutions are designed to maintain the probe’s calibration and functionality. • Clean regularly by soaking in pH and EC cleaning solution (MA9016) Over time, the probe can accumulate deposits from samples such as salts, oils, or other contaminants. To keep the probe in optimal condition, regularly clean it by soaking in a cleaning solution specifically designed for pH and EC probes, such as the MA9016. This ensures that any buildup is effectively removed, helping maintain the meter’s performance and accuracy. • Calibrate after cleaning and before testing to maintain accuracy After cleaning the probe, always recalibrate the MW802 before using it for measurements. Cleaning can alter the probe’s accuracy, and calibration ensures that it provides reliable readings. Calibration should be done with fresh standard buffer solutions to restore the meter to its optimal performance. • Gently stir the probe in the sample for the most reliable results When measuring, it’s essential to stir the probe gently in the sample to obtain the most accurate and consistent readings. Stirring helps to evenly distribute any variations within the solution, ensuring that the measurement reflects the overall conditions. Avoid vigorous shaking, which could disrupt the measurement process or damage the probe. By following these detailed instructions for use and maintenance, you’ll ensure that your MW802 PRO remains accurate, reliable, and in excellent condition, giving you the best results for your water or nutrient solution analysis over time.   Order the Milwaukee MW802 PRO Today! Whether you're managing a hydroponic system, ensuring optimal water quality in aquariums, or monitoring nutrient levels in agriculture, the Milwaukee MW802 PRO 3-in-1 Combo Meter is the versatile tool you can rely on for precise pH, EC, and TDS measurements. With its easy-to-use design and accurate results, the MW802 is perfect for professionals and enthusiasts alike, helping you maintain ideal conditions for plant growth, aquatic life, and more.

Milwaukee MW600 PRO Dissolved Oxygen Meter – Accurate, Reliable & Field-Ready DO Monitoring The Milwaukee MW600 PRO Dissolved Oxygen (DO) Meter is a trusted solution for professionals and enthusiasts who require precise oxygen measurements in water. Whether you're managing aquaculture tanks, monitoring wastewater, researching environmental changes, or ensuring optimal fermentation, the MW600 is built to deliver consistent and reliable results in diverse and demanding environments. Designed for accuracy and ease-of-use, the MW600 provides fast DO readings with a simple calibration process and long-lasting polarographic probe. Its compact, portable design makes it ideal for fieldwork, while the clear LCD display ensures visibility even in bright outdoor conditions. From fish farms to field stations, the MW600 is the go-to tool for oxygen measurement that supports thriving aquatic ecosystems, productive water treatment, and safe water quality standards. With its affordable price and professional-grade features, the MW600 is perfect for anyone serious about dissolved oxygen monitoring.   Why Choose the Milwaukee MW600? High Accuracy – Provides reliable dissolved oxygen readings with 0.1 mg/L resolution. Easy Calibration – One-point manual calibration simplifies setup. Field-Ready Design – Lightweight, portable, and battery-operated for on-the-go use. Polarographic Probe – Durable and precise, with easy membrane replacement. Clear LCD Display – Fast, easy-to-read measurements even in direct sunlight. Long Cable Length – 3-meter probe cable offers flexibility in various applications.   Applications of the MW600 PRO Dissolved Oxygen Meter Aquaculture & Fish Farming Monitor oxygen levels in tanks and ponds to maintain healthy conditions for fish and shrimp, avoid hypoxia, and support efficient feeding. Environmental Monitoring Conduct water quality assessments in lakes, rivers, and wetlands. Ideal for NGOs, researchers, and conservationists needing portable DO monitoring. Wastewater & Water Treatment Ensure optimal aerobic conditions for biological treatment processes, monitor oxygenation during aeration, and stay compliant with environmental standards. Beverage Industry (Brewing & Winemaking) Control oxygen exposure during fermentation and bottling to protect flavor and product stability. Food Processing Measure DO in process water and seafood tanks to ensure freshness and prevent spoilage. Education & Research Support classroom experiments and fieldwork in environmental science, biology, and chemistry. Hydroponics & Agriculture Maintain oxygen-rich nutrient solutions to enhance root development and nutrient absorption in plants. Swimming Pools & Spas Help maintain optimal water quality and support chlorine efficiency with DO readings in recreational water systems.   Proper Care & Maintenance To ensure optimal performance and extend the life of your MW600 PRO DO Meter: Store Properly: Always keep the probe in a moist environment using the included protective cap and electrolyte solution. Replace Membranes: Change the membrane cap regularly and refill with fresh electrolyte solution to maintain accurate results. Clean the Probe: Rinse after each use and soak in cleaning solution periodically. Calibrate Frequently: Perform regular calibration using air calibration for accurate readings. Avoid Air Bubbles: Ensure there are no bubbles trapped beneath the membrane to avoid faulty readings. “OPEN AIR” CALIBRATION PROCEDURE 1. Remove the membrane: Take the membrane off the end of the probe and dry the diode off. 2. Zero out the display: Connect the probe to the base unit and turn the unit on. Your display should read 0.0. If it does not, go to the position “0” screw on the front of the unit with the screw driver provided and through the access hole make the unit display read 0.0. 3. Fill the membrane: Go to the membrane and put the “O” ring inside the membrane on the shoulder at the base of the threads. Fill the membrane to just short of the “O” ring with MA9071 electrolyte solution. Be sure that there are no bubbles inside the membrane. (Air bubbles are the main cause of calibration failure) 4. Attach the membrane: Screw the membrane on to the probe. 5. Let stablize: Turn the meter on and hang the probe off the end of a table pointing down and let the unit display stabilize (this may take 5 to 15 minutes) 6. Adjust: Push down and hold the “Cal” button on the front face of the meter and with the screwdriver go to the front Cal position “100%” and make the display read 100. You are now calibrated. EXTRA TIPS Watch for the membrane having wrinkles or stretch marks. If you see wrinkles, replace with a new membrane. Always use fresh electrolyte solution (MA9071).   With the right care, your MW600 will remain a reliable partner for all your dissolved oxygen measurement needs.   Order the Milwaukee MW600 Today! Experience precision, durability, and ease with a DO meter trusted by professionals worldwide.

Milwaukee MA887 Digital Salinity Refractometer – Accurate Salinity Readings for Healthy Marine Environments In the world of marine aquariums, aquaculture systems, and saltwater research, salinity is more than just a number – it's a foundation for life. Corals, fish, and invertebrates thrive only within a precise salinity range. Even slight imbalances can stress marine organisms, affect growth, or trigger disease. Whether you're a reef enthusiast or managing a commercial hatchery, accurate salinity control is essential. The Milwaukee MA887 Digital Salinity Refractometer is designed to take the guesswork out of saltwater measurement. Unlike manual optical refractometers that rely on subjective reading and light conditions, the MA887 delivers digital precision, reliability, and repeatability in just seconds. With measurements displayed in Practical Salinity Units (PSU), parts per thousand (ppt), and specific gravity, this tool empowers you to monitor and maintain a stable marine environment with confidence. Engineered for professionals and serious hobbyists alike, the MA887 uses optical technology and automatic temperature compensation (ATC) to ensure accurate readings – even when sample temperature fluctuates. Just a few drops of sample water are all it takes to get a laboratory-grade measurement, making it an indispensable tool for reef tank owners, aquaculturists, and marine scientists.   Why Choose the Milwaukee MA887? • Digital Accuracy You Can Trust – Say goodbye to manual interpretation. The MA887 gives you precise readings with ±2 ppt accuracy for quick and consistent results. • 3-in-1 Measurement – View salinity in ppt, PSU, or specific gravity (20/20) to meet the needs of different marine applications. • Automatic Temperature Compensation (ATC) – No need to worry about temperature skewing your results. ATC ensures accuracy across temperature variations. • Fast & Easy to Use – Just place a few drops of water on the prism, close the cover, and read the result on the digital display within seconds. • Minimal Sample Volume – Requires only 100 µL of water for testing – ideal for reef tanks or small-volume systems. • Durable Design – Built to last with a stainless steel sample well and solid construction for daily use in demanding environments. • Versatile Applications – Perfect for saltwater aquariums, coral care, aquaculture farms, shrimp hatcheries, salt mixing, and lab testing.   Applications of the MA887 Digital Salinity Refractometer Aquaculture ·       Monitoring salinity in fish farming tanks to ensure optimal growth and reproduction ·       Maintaining consistent water quality to reduce fish stress and disease risk Marine Aquariums & Reef Tanks ·       Ensuring proper salinity for corals, invertebrates, and saltwater fish ·       Supporting healthy biological filtration and stable marine ecosystems Laboratories ·       Conducting accurate and repeatable water testing for research and analysis ·       Ideal for marine biology, oceanography, and environmental science studies Saltwater Mixing & Preparation ·       Verifying salinity levels when preparing synthetic seawater for tanks or experiments ·       Ensuring consistency for aquarium water changes Industrial Applications ·       Quality control in saltwater processing or brine production ·       Monitoring salinity in cooling towers or desalination systems Shrimp & Shellfish Farming ·       Managing salinity in hatcheries and grow-out systems ·       Supporting optimal shell formation and metabolic function in crustaceans Aquaponics (Salt-Tolerant Systems) ·       Controlling salinity in hybrid aquaponic systems using brackish water species   Proper Care & Maintenance To keep your MA887 performing at its best: • Rinse After Every Use – Clean the prism and sample well with distilled or deionized water to avoid salt buildup or residue. • Avoid Contaminants – Make sure no oils, chemicals, or residues enter the sample chamber. Use clean pipettes or droppers for sampling. • Verify calibration before use –  Use distilled or deionized water to check the zero point and ensure accurate readings, especially when measuring across different salinity ranges. • Store Safely – Keep the instrument dry when not in use and store it in a clean, protected space. Avoid exposing it to extreme temperatures or humidity.   Maintain the delicate balance of your marine ecosystem with the Milwaukee MA887 Digital Salinity Refractometer – where precision meets ease of use. Whether you’re nurturing vibrant coral reefs or managing high-performance aquaculture systems, the MA887 delivers reliable salinity measurement every time.

DESCRIPTION The Milwaukee PRO digital Redox ORP controller automatically monitors and fine-tunes ORP levels. Just set your ORP parameters and let the Milwaukee ORP Controller do the rest. The Milwaukee PRO digital ORP controller is preferred by people looking to dial in their testing program when they have an ongoing need to maintain levels. Common uses are aquariums, swimming pools and spas, and other water quality monitoring uses. The Milwaukee PRO ORP controller offers: ACCURACY The Milwaukee PRO ORP controller is accurate ±5 mV. AUTOMATION The controller provides a control range of ±1000 mV with a user selectable set point with a range of 0 - 600 mV and a visual "Power Activated" LED light. COMPATIBLE DOSING PUMP Milwaukee includes a 12 VDC power plug socket compatible with Ozone Dosing units. DESIGN FEATURES Fast easy to read current results with large digital LCD readout Accurate to ±5 mV with the user selectable high/low set points Gel-filled, double junction lab grade Platinum ORP electrode for low maintenance and high performance included 6.5 feet probe cables for extra flexibility when testing 12 VDC power supply CARE AND USE Properly maintaining your ORP probe will give your fast, accurate results for longer. Here are our top three tips. 1. Always store with the cap full of buffer or storage solution not water. 2. Clean your probe regularly by soaking in cleaning solution. 3. After cleaning return the ORP probe sensor to the tank. Thank you for considering Milwaukee to help you take your results to the next level.

The Milwaukee MI56P is the replacement pH/temperature probe for the pH55 and pH56 PRO Testers (sold separately). The MI56P measures pH and temperature and easily slides into the tester fitting then screws into the meter body for secure installation.

The Milwaukee MI59P is the replacement for Milwaukee PRO Waterproof 3-in-1 Temperature / Conductivity / TDS EC59 and EC60 Testers (sold separately). The MI59P measures pH and temperature and easily slides into the tester fitting then screws into the meter body for secure installation.

DESCRIPTION The SE220 probe is designed for use with the Milwaukee MW101 and MW102 PRO pH Meters. DESIGN FEATURES The SE220 probe makes pH testing easy and requires very little maintenance. Top features include: DOUBLE JUNCTION The double junction design reduces risk of clogging. GEL FILLED Using a gel removes the need to maintain the electrolyle levels. RESIN BODY The resin body is highly durable, chemically resistant and protects against accidental damage. CARE AND USE Properly maintaining your pH probe will give you fast, accurate results for longer. Here are our top four tips. 1. Always store with the cap full of buffer or storage solution not water. 2. Clean your probe regularly by soaking in cleaning solution. 3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH probe sensor. 4. Gently stir the probe in the sample for a faster result.

Description The SE510 Conductivity (EC)/ Total Dissolved Solids (TDS) probe is designed for use with the Milwaukee MW301 and MW401 PRO Conductivity Meters. This probe features a DIN connector and 3' (1 m) cable.

DESCRIPTION The SE600 probe is designed for use with the Milwaukee MW801 and MW802 PRO 3-in-1 pH, EC, TDS Combo Meters. DESIGN FEATURES The Milwaukee lets you easily and accurately test pH, conductivity and total dissolved solids (TDS) using an integrated probe. Top features include: DOUBLE JUNCTION The double junction design reduces risk of clogging. GEL FILLED Using a gel removes the need to maintain the electrolyle levels. RESIN BODY The resin body is highly durable, chemically resistant and protects against accidental damage. CARE AND USE The SE600 Combo electrode includes both a pH and EC electrode. Both need maintenance. All pH sensors have a limited life and response time gets longer with age. Properly maintaining your PRO pH Tester will give your fast, accurate results for longer. EC sensors are more robust but can still be affected by residue build up. Here are our top four tips. 1. Always store with the cap full of buffer or storage solution not water. 2. Clean your Tester regularly by soaking in cleaning solution. 3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH and EC sensor. 4. Gently stir the PRO Tester in the sample for a faster result. 5. Rinse in water after every test. Thank you for considering Milwaukee to help you take your results to the next level.

DESCRIPTION The MA911B/2 probe is lab grade, gel-filled pH probe for use with Milwaukee Monitors and Controllers. DESIGN FEATURES Top features include: DOUBLE JUNCTION The double junction junction design reduces the risk of clogging. SPHERICAL GLASS TIP The sperical glass tip provide the largest possible surface area for faster results. RESIN BODY The resin body is tough to withstand accidental knocks and also protects the glass sensing bulb. EXTENDED CABLE Offers a 6.6 feet cable for increased flexibility in measuring. USE AND CARE pH meters usually start performing poorly because of problems with the probe. The two parts of the pH probe that cause problems are the glass sensing bulb and the reference junction. SENSING BULB The glass bulb loses sensitivity with use and will eventually fail. This is true of all pH probes. REFERENCE JUNCTION The reference junction is a small hole that allows the meter to compare the sample to a reference. The reading is generated based on the electrical difference between the sample and reference. If the junction hole gets clogged, the pH probe will no longer function. You can extend the life of your pH electrode in the following ways. STORAGE The pH probe needs to be kept hydrated. Long periods of dry storage will damage the sensitivity of the probe. Allowing the probe to dry out may also result in the junction hole getting clogged. Storing in pH probe storage solution or pH calibration buffers will help address both these issues. Do not store in tap water and DI water. This will damage the sensitivity of the probe. The best way to store the probe is with the probe's cap filled with storage solution or calibiration buffer and the cap tightened to prevent leakage. It is also recommended that to store the electrode upright to further reduce the potential for leakage. CLEANING Residue from the sample can impact the sensitivity of the sensing bulb and block the junction. This is especially true if the sample has a lot of organic material. We recommend regularly soaking your electrode in cleaning solution. CALIBRATION The pH sensing bulbs become less sensitive over time so make sure that you are calibrating regularly to keep your PRO pH meter accurate. Also, calibrate after cleaning or a long period of storage.

DESCRIPTION The MA921B/2M probe is designed for use with Milwaukee Monitors and Controllers. DESIGN FEATURES The Milwaukee Double Junction ORP Platinum Electrode is probe specifically designed for the continuous analysis of aquariums. Top features include: DOUBLE JUNCTION The double junction design reduces risk of clogging leading to more stable ORP measurement and reduced maintenance. GEL FILLED Using a gel removes the need to maintain the electrolyle levels. PLATINUM ELECTRODE The platinum electrode is long lasting with little maintenance required. RESIN BODY The resin body is highly durable, chemically resistant and protects against accidental breakage of the sensing bulb. CARE AND USE Properly maintaining your ORP probe will give your fast, accurate results for longer. Here are our top three tips. 1. Always store with the cap full of buffer or storage solution not water. 2. Clean your probe regularly by soaking in cleaning solution. 3. Use MA9020 (200 mV - 275 mV) Calibration Check Solution

DESCRIPTION The Milwaukee MA840 is a polarographic replacement probe for the MW600 Dissolved Oxygen meter. The refillable polarographic probe has an oxygen-permeable polytetrafluroethylene (PTFE) membrane sensor for measuring dissolved oxygen (DO) levels in aqueous solutions. The probe uses a platinum cathode and a silver chloride anode which the MW600 meter polarizes so that oxygen passing through the membrane can be measured to produce stable, accurate readings. DESIGN FEATURES Reinforced plastic body for durability. Built in temperature sensor to achieve thermal equilibrium between the sensor and the sample for more accurate reading. 10 inches long with a tip that tapers from 1-1/2" to 3/4" in diameter. 10 foot cable with a 7-pin DIN connector for attaching to the meter.

Description The Milwaukee MA841 Dissolved Oxygen Membranes are compatible with the MA840 Polarographic Dissolved Oxygen Probe used on the MW600 Dissolved Oxygen Meter. Design features Oxygen-permeable polytetrafluroethylene (PTFE) membrane sensor Easy to fill with MA9071 Oxygen Electrolyte Solution Includes membranes and 5 o-rings

Description The Milwaukee MA751 hard plastic carrying case is a High Quality, tight fitting, foam lined case designed for easy light weight carry and sleek, ergonomic design. This case is designed for the Milwaukee Portable meter product line (MW100, MW101, MW102, MW500, MW301, MW302, MW401, MW402)!   MA751 Design features Specific foam cut insert to prevent meter rattle. Easy carrying handle. Strong outer plastic design. Strong fasteners for long-term use.

Description The Milwaukee MA752 hard plastic carrying case is a High Quality, tight fitting, foam lined case designed for easy light weight carry and sleek, ergonomic design. This case is designed for the Milwaukee Refractometer product line!   MA752 Design features Specific foam cut insert to prevent meter rattle. Easy carrying handle. Strong outer plastic design. Strong fasteners for long-term use.

Description The Milwaukee MA753 hard plastic carrying case is a High Quality, tight fitting, foam lined case designed for easy light weight carry and sleek, ergonomic design. This case is designed for the Milwaukee Water resistant testers product line (pH55, pH56, ORP57, pH58,EC59, EC60, MW803, MW804)!   MA753 Design features Specific foam cut insert to prevent meter rattle. Easy carrying handle. Strong outer plastic design. Strong fasteners for long-term use.

DESCRIPTION Probe calibration is a simple procedure for optimal performance and should be done any time your readings become suspect. Calibration should be performed at least once a month. MA9004 is a lab grade pH 4.01 buffer solution certified to meet the standard to an accuracy of ±0.01 pH removing the inaccuracies involved with mixing buffers. Milwaukee solutions are designed to help you achieve reliable and repeatable pH measurements while extending the life of your electrode. DESIGN FEATURES pH 4.01 Calibration Buffer Solution (230 mL) Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings Sealed against light with air tight, tamper proof cap Ideal for fast calibration Simply open, pour into a beaker or container and insert the tester or electrode to start the calibration process.

DESCRIPTION Probe calibration is a simple procedure for optimal performance and should be done any time your readings become suspect. Calibration should be performed at least once a month. MA9007 is a lab grade pH 7.01 buffer solution certified to meet the standard to an accuracy of ±0.01 pH removing the inaccuracies involved with mixing buffers. Milwaukee solutions are designed to help you achieve reliable and repeatable pH measurements while extending the life of your electrode. DESIGN FEATURES pH 7.01 Calibration Buffer Solution (230 mL) Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings Sealed against light with air tight, tamper proof cap Ideal for fast accurate calibration Simply open, pour into a beaker or container and insert the tester or electrode to start the calibration process.

Description MA9011 is a reagent grade pH and ORP electrode fill solution that contains 3.5M KCl. This fill solution is specifically formulated for double junction electrodes. Double junction electrodes have two chambers. The inner chamber has an Ag/AgCl reference wire and a KCl + AgCl fill solution. The outer chamber has a KCl fill solution. The KCl in the outer chamber is silver free removing the risk of silver precipitation which can happen easily in the presence of heavy metals and Tris biological buffer. This precipitate can clog the outer reference junction resulting in instability and a slow response time. Refillable electrodes need to have their electrolyte level checked before use. If the level is low, refill with electrode to the correct level with the MA9011 solution to ensure correct operation. Maintaining the electrolyte solution ensures that there is sufficient head pressure so that the reference electrolyte flows into the sample resulting in a faster response. Milwaukee solutions are designed to help you achieve reliable and repeatable pH measurements while extending the life of your electrode. Design Features pH and ORP 3.5M KCl electrolyte solution (230 mL) Fill solution for double junction pH & ORP electrodes Made using high quality reagent-grade chemicals and are manufactured to the highest standards of precision and accuracy Sealed against light with air tight, tamper proof cap Expiry date and lot number included

DESCRIPTION MA9015 is a lab grade electrode storage solution prepared with premium chemicals to improve the performance and extend the life of your pH and ORP electrodes, testers and pens. To ensure a quick response and free-flowing liquid junction, the sensing element and reference junction must not be allowed to dry out. Properly storing your pH electrode in a solution keeps the glass membrane well hydrated which maintains proper function and provides accurate readings. MA9015 also helps keep the junction in your pH and ORP electrode flowing which is critical for fast results. DESIGN FEATURES Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings. Formulated to minimize organic growth on your electrode. Sealed against light with air tight, tamper proof cap. Factory blended to precise standards in a dedicated, temperature controlled environment.Simply open and add to the cap of your electrode or tester. Each bottle marked with lot number and expiration date.

DESCRIPTION MA9016 is a lab grade electrode cleaning solution prepared with premium chemicals to improve the performance and extend the life of your pH and ORP electrodes, testers and pens. Your accuracy and speed of your results are dependent on your pH sensing bulb and ORP platinum tip being clean. pH and ORP electrodes also need a free flowing junction to function. Milwaukee's cleaning solution helps both keep sensing parts clean and the junction open. Simply open the bottle, fill a beaker or container so that the level covers the sensor and junction, and soak for 15 to 20 minutes followed by a soaking in MA9015 storage solution for at least 2 hours. DESIGN FEATURES Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings. Specially formulated for cleaning electrodes Factory blended to precise standards in a dedicated, temperature controlled environment. Sealed against light with air tight, tamper proof cap. Each bottle marked with lot number and expiration date.

DESCRIPTION MA9020 is a lab grade ORP 200-275 mV solution certified to meet the range. MA9020 is used to check the health and acuracy of an ORP electrode. Milwaukee solutions are designed to help you achieve reliable and repeatable ORP measurements. DESIGN FEATURES OPR 200-275 mV solution value (230 mL). Fundamental for the correct use of ORP electrodes and for obtaining the most accurate and reproducible readings. Sealed against light with air tight, tamper proof cap. Ideal for fast accuracy check. Simply open, pour into a beaker or container and insert the tester or electrode to start the ORP mV check process.

DESCRIPTION The MA9071 electrolyte fill solution is designed for Milwaukee's polarographic dissolved oxygen probe. A high quality electrolyte solution is crucial to the performance of your dissolved oxygen probe. DESIGN FEATURES PRECISE FORMULATION Factory mixed using reagent grade chemicals in a dedicated, temperature controlled environment. TRACEABLE Product labeled with product code, lot number and expiration date. SECURE Air tight bottle with tamper-proof seal.USE AND CARE“OPEN AIR” CALIBRATION PROCEDURE FOR THE MW600 DISSOLVED OXYGEN METER 1. Remove the membrane Take the membrane off the end of the probe and dry the diode off. 2. Zero out the display Connect the probe to the base unit and turn the unit on. Your display should read 0.0. If it does not, go to the position “0” screw on the front of the unit with the screw driver provided and through the access hole make the unit display read 0.0. 3. Fill the membrane Go to the membrane and put the “O” ring inside the membrane on the shoulder at the base of the threads. Fill the membrane to just short of the “O” ring with MA9071 electrolyte solution. Be sure that there are no bubbles inside the membrane. (Air bubbles are the main cause of calibration failure) 4. Attach the membrane Screw the membrane on to the probe. 5. Let stablize Turn the meter on and hang the probe off the end of a table pointing down and let the unit display stabilize (this may take 5 to 15 minutes) 6. Adjust Push down and hold the “Cal” button on the front face of the meter and with the screwdriver go to the front Cal position “100%” and make the display read 100. You are now calibrated. EXTRA TIPS Watch for the membrane having wrinkles or stretch marks. If you see wrinkles, replace with a new membrane. Always use fresh electrolyte solution (MA9071).