€320.44

Milwaukee MC125 PRO 2-in-1 Digital pH / ORP Controller

SKU: MC125
Range: 0.00 to 14.00 pH | ORP: ±1000 mV
Resolution: 0.1 pH, 1 mV
Accuracy: ±0.2 pH | ±5 mV
Calibration: Manual 2 point pH only | ORP Factory Calibrated
Milwaukee MC125 PRO 2-in-1 Digital pH / ORP Controller has been successfully added to your cart. Feel free to continue shopping or check out.
Quantity

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.

Specifications


pH Range: 0.00 - 14.00 pH
ORP Range: ± 1000mV
pH Resolution: 0.01 pH
ORP Resolution: ± 1 mV
pH Accuracy: ± 0.2 pH
ORP Accuracy: ± 5 mV
Set point pH: 4 to 8 pH
Set point ORP: -200 to 600 mV
Calibration: Manual 2 points pH
Alarm Active when reading is higher or lower than set point
pH Dosing Contact
1 power plug for CO2 dosing
ORP Dosing Contact
1 power plug for O3 dosing
pH Electrode: MA911B/2 (included)
ORP Electrode: MA921B/2 (included)
Environment: 0 to 50°C / 32 to 122°F; max RH 95%
Power Supply: 12 VDC adapter (included)
Power Drivers: 115 VAC, 2A, 60Hz or 230 VAC, 1A, 50Hz
Dimensions: 5.8 x 3.25 x 1.26 inches
Weight: 7.1 ounces

Application

Hydroponics & Horticulture

In hydroponic systems and horticultural environments, maintaining the correct pH balance of the nutrient solution is critical for optimal plant health. The pH level influences the solubility and availability of essential nutrients, and a slight deviation from the ideal range can result in nutrient deficiencies, poor growth, or even plant death. The Milwaukee MC125 pH Controller ensures that your plants receive the perfect pH environment, supporting healthy growth and maximizing yield potential.

The Milwaukee MC125 pH Controller is perfect for:

Hydroponic vegetable growers: Provides precise pH control for leafy greens, tomatoes, cucumbers, and other hydroponic crops.

Home growing : Ensures the pH is perfectly suited for plants that require specific pH ranges for optimal growth, promoting healthy development and maximizing yield.

Ornamental plant production: Whether you’re growing flowers or other ornamental plants, the MC125 helps you maintain the best growing conditions.

Benefits:

Reduced Labor: The MC125 eliminates the need for manual pH testing and adjustments, saving you time and effort.

Improved Plant Health: Consistent pH levels ensure that your plants receive the correct nutrients, leading to healthier, stronger plants.

Increased Yields: By optimizing the pH levels, you can increase the effectiveness of your nutrient solution, resulting in better yields and higher-quality produce.

How It Works:

The Milwaukee MC125 pH Controller is a state-of-the-art, reliable tool designed to monitor and adjust the pH level of your nutrient solution. Here’s how it functions:

  1. Set Desired pH Range: Begin by selecting the pH range that is optimal for your plants (typically between 5.5-6.5 for hydroponics and horticulture). This range can vary depending on the type of plants being cultivated. For example, cannabis typically thrives in a pH range of 5.8–6.2, while vegetables may require a slightly higher range.
  2. Automatic pH Adjustment: The MC125 continuously monitors the pH level of your nutrient solution. If the pH falls outside the desired range, the controller activates your dosing pump (sold separately), adding pH-adjusting solutions automatically. This ensures that the pH is always within the optimal range for nutrient absorption.
  3. Precision Monitoring: The controller uses a high-precision pH probe that provides real-time readings. You can rely on the MC125 to continuously check the pH without the need for manual testing, reducing the risk of human error.
  4. User-Friendly Interface: The controller’s simple and intuitive interface makes it easy to set up and adjust the pH parameters. With easy-to-read digital displays, you can easily see the current pH level and make any necessary adjustments to suit your system’s needs.

How to Use:

  1. Install the pH Probe: Place the included pH probe into your nutrient solution. Make sure it’s properly connected to the MC125 controller.
  2. Set Your Desired pH Range: Use the controller’s interface to set the target pH range for your system. For example, if you're growing hydroponic tomatoes, set the pH range between 5.8 and 6.2. The controller will then aim to keep the pH within this window.
  3. Connect the Dosing Pump: Attach a compatible dosing pump to the MC125. This pump will be activated whenever the pH falls outside the set range. Ensure that the pump is connected to a container of pH-adjusting solution, such as phosphoric acid or potassium hydroxide, depending on whether the pH is too high or too low.
  4. Monitor and Adjust: The MC125 will continuously monitor the pH and make automatic adjustments as necessary. If the pH drifts too high or too low, the dosing pump will be activated to add the required pH solution. It’s important to check that the dosing pump is working properly and that you have sufficient pH solution available in the reservoir.
  5. Regular Calibration: To maintain accuracy, it’s important to regularly calibrate the pH probe. Calibration ensures that the readings are precise and reliable over time. You can easily calibrate the probe using standard pH calibration solutions.

 

Aquariums & Aquaculture

In both freshwater and marine environments, pH is a critical factor for maintaining a healthy ecosystem. Aquatic life, including fish, plants, and corals, all thrive within specific pH ranges. The MC125 pH Controller helps maintain a stable and optimal pH level, supporting the overall well-being of your aquatic environment. By automating the pH regulation process, it takes the guesswork out of water quality management, ensuring your system remains in balance without the need for constant manual testing.

Ideal for: The MC125 is perfect for a variety of applications, including home aquariums, reef tanks, fish farms, and larger aquaculture systems. It’s designed to handle the delicate balance of maintaining ideal pH conditions for diverse aquatic species, from tropical fish to coral reefs and other marine life.

With the MC125, you can rest assured that your aquatic environment is being managed with precision, allowing you to focus on enjoying and cultivating a thriving ecosystem.

How It Works: The MC125 continuously monitors the pH levels of the water and automatically adjusts them as needed. When the pH falls outside the set range, the controller activates connected systems like CO₂ regulators or dosing pumps (sold separately), adding the necessary substances to bring the pH back into the desired range. This automatic action ensures that your aquatic life is consistently exposed to the ideal water conditions, minimizing stress and promoting healthy growth.

How to Use:

  1. Set Your pH Range: Start by setting the desired pH range for your specific aquatic setup (e.g., freshwater tank, marine tank, or aquaculture system).
  2. Connect the Dosing Systems: Attach dosing pumps or CO₂ regulators to the controller to automatically adjust the pH levels when needed.
  3. Continuous Monitoring: The MC125 will continuously monitor the pH, ensuring it stays within the optimal range. If any adjustments are required, the controller will automatically activate the connected systems, saving you time and effort in managing the water conditions.

 

Water Treatment & Purification

In water treatment processes, maintaining the correct pH is crucial for ensuring the effectiveness of various chemical reactions, such as disinfection, coagulation, and metal precipitation. pH levels that are too high or too low can hinder these processes, reducing the overall effectiveness of water treatment. The MC125 pH Controller provides a reliable, automated solution for small-scale water treatment systems, maintaining pH levels within the optimal range for efficient chemical reactions and compliance with water quality standards.

Ideal for: The MC125 is designed for use in small-scale water treatment systems, including municipal water treatment plants, industrial water treatment setups, and laboratory environments. Whether you are managing the water quality in a municipal system or conducting experiments in a lab, the MC125 ensures that your pH control is automated and reliable, minimizing the need for constant manual adjustments.

By using the MC125, you can streamline your water treatment processes, reduce the risk of pH-related inefficiencies, and improve both water quality and regulatory compliance.

How It Works: The MC125 continuously monitors the pH of the water and keeps it within the designated range by controlling connected acid/base dosing systems (sold separately). When the pH drifts outside the set parameters, the controller activates the dosing pumps to introduce the necessary chemicals to correct the pH. This process helps to ensure that the water treatment reactions, such as disinfection and precipitation, proceed effectively, improving water quality and ensuring compliance with regulatory standards.

How to Use:

  1. Set Desired pH Range: Determine the ideal pH range for your specific water treatment process, taking into account the chemical reactions involved.
  2. Connect Dosing Systems: Link the MC125 to the appropriate acid/base dosing systems to adjust the pH when necessary.
  3. Continuous pH Monitoring: The MC125 will continuously monitor the pH levels of the water. When adjustments are needed, it will activate the dosing systems, ensuring that the pH remains within the optimal range.


Laboratories & Educational Use

In both research laboratories and educational settings, precise pH control is vital for the success of experiments that rely on stable chemical, biochemical, or biological reactions. Even small fluctuations in pH can significantly affect the outcome of sensitive experiments, leading to inaccurate results or compromised findings. The MC125 pH Controller is designed to take the guesswork out of pH management, ensuring that your experiments remain consistent and reliable. This allows researchers, educators, and students to focus on the science rather than constantly monitoring and adjusting pH levels.

Ideal for: The MC125 is ideal for use in a variety of laboratory and educational settings. It is perfect for research labs where precision is critical for successful experiments and educational institutions where students can benefit from hands-on learning with automated, accurate pH control. It is also useful for scientific demonstrations where pH management is a key component of the experiment, ensuring that everything runs smoothly and without interruption.

By incorporating the MC125 into your lab or classroom, you can enhance the accuracy and reliability of your experiments, reduce the need for manual interventions, and provide a more efficient and productive learning or research environment. Whether it's ensuring the stability of a biochemical reaction or demonstrating the importance of pH in various scientific processes, the MC125 is a trusted tool for seamless pH control in the lab.

How It Works: The MC125 integrates seamlessly into any laboratory or classroom setup. It continuously monitors the pH levels of solutions and automatically adjusts them using connected dosing systems (sold separately) to maintain the desired range. Whether conducting biochemical reactions, enzyme activity studies, or chemical synthesis, the MC125 ensures that the pH stays within the optimal parameters, eliminating the need for frequent manual pH checks. This automated control helps maintain the stability of experimental conditions, leading to more accurate and reproducible results.

How to Use:

  1. Set the pH Range: Define the ideal pH range for your experiment or educational demonstration, considering the requirements of the chemical or biological process being studied.
  2. Connect Dosing Systems: Link the MC125 to appropriate dosing systems for both acid and base solutions. These systems will automatically adjust the pH when necessary.
  3. Continuous pH Monitoring: The MC125 will provide real-time pH monitoring and adjust the levels as needed to keep the experiment within the optimal range.
  4. Effortless Adjustment: Once set, the system operates autonomously, allowing researchers or educators to focus on other aspects of their work while the MC125 handles pH management.

 

Homebrewing & Fermentation

In the world of brewing and fermentation, pH plays a pivotal role in the final product’s taste, safety, and quality. Whether you are crafting beer, wine, cider, or kombucha, maintaining the right pH levels throughout the brewing or fermentation process can be the difference between a successful batch and one that’s less than ideal. The MC125 pH Controller offers automated pH control, removing the guesswork and manual adjustments that can take time and attention away from perfecting your craft. With the MC125, you can ensure precise pH levels are maintained from the start of fermentation to the end, leading to better tasting and more consistent results in your brewed products.

Ideal for: The MC125 is a game-changer for homebrewers, helping them achieve professional-grade pH control without needing a chemistry lab. It’s also perfect for small-batch breweries looking to enhance the consistency and quality of their products. For fermenters working with kombucha, cider, or wine, the MC125 ensures that each batch undergoes fermentation under the ideal conditions for taste and quality.

This automated pH control device is designed for those who are serious about their craft and want to ensure every batch is just right. From homebrew enthusiasts to professionals in the microbrewery or fermentation industry, the MC125 helps you streamline the process and achieve consistently great results.

By integrating the MC125 into your brewing or fermentation setup, you’ll eliminate the stress of constantly adjusting pH manually, allowing you to focus on what truly matters—crafting the perfect beverage. Whether you're brewing a crisp IPA, a rich stout, or fermenting a tangy batch of kombucha, the MC125 ensures that pH levels stay in check for better flavors, higher quality, and a more successful fermentation process.

 How It Works: The MC125 is designed to automate the pH management in your brewing or fermentation process. It continuously monitors the pH level and, if necessary, adjusts it using dosing pumps that add pH-adjusting solutions, ensuring the pH stays within the desired range. This level of control is perfect for fine-tuning the mash pH during the brewing process or ensuring the proper acidity for fermented beverages like beer, wine, or kombucha. Whether you’re brewing at home or managing a small-scale operation, the MC125 simplifies the process by maintaining pH balance with minimal intervention.

  1. Set the Desired pH Range: Establish the optimal pH levels for each phase of your brewing or fermentation process. For example, different stages may require varying pH ranges to achieve the best flavor or fermentation efficiency.
  2. Link to Dosing Pumps: Connect the MC125 to your dosing pumps, which will add acid or base solutions when pH strays outside the set range. These dosing pumps are crucial for making precise adjustments, whether it’s lowering the pH during mash time or raising it for fermentation stabilization.
  3. Continuous Monitoring: The MC125 will constantly monitor your brew or fermentation vessel, ensuring that the pH remains stable and within the ideal range for the process. This can help prevent issues like off-flavors caused by improper pH or stuck fermentation caused by unbalanced acidity.
  4. Effortless Automation: Once set up, the MC125 provides a hands-off solution, allowing you to focus on refining your recipes and techniques while it maintains the perfect pH balance.

How to Use:

  1. Install the pH Controller: Place the MC125 pH Controller in a convenient location near your brewing setup. Connect it to the pH probe and the dosing pump (sold separately) that will add pH-adjusting solutions to your brew.
  2. Set the Desired pH Range: Input your target pH range on the MC125 controller. For most brewing applications, the ideal pH for the mash typically falls between 5.2 and 5.6, depending on the grain bill and recipe. Adjust the range to suit your specific brewing process or fermentation style.
  3. Connect the Dosing Pump: Connect the MC125 to a dosing pump. The pump will be used to automatically add pH-lowering chemicals (such as phosphoric acid or lactic acid) to your mash or wort when the pH exceeds the set limit. This ensures consistent and accurate pH control during the brewing process.
  4. Monitor the pH During Brewing: Once everything is set up, the MC125 will continuously monitor the pH throughout your brewing process. When the pH moves outside the desired range, the controller will activate the dosing pump to bring the pH back within the target range. This happens automatically without the need for manual adjustments.
  5. Fine-tune the pH for Fermentation: The MC125 not only helps with the mash pH but can also be used during fermentation, especially for controlling the acidity of fermented beverages like beer, wine, or kombucha. As fermentation progresses, pH can fluctuate, and the MC125 will keep it stable, promoting the best flavor and fermentation conditions.
  6. Enjoy Consistent Results: With the MC125 in place, you’ll enjoy precise, consistent pH control throughout your brewing process, ensuring that your final product is as intended, with optimal flavors and consistency in each batch.

This will ensure that your homebrewing process is more precise and automated, leaving you more time to perfect your recipes while the MC125 handles the pH control!

 

Pools & Spas

Maintaining the right pH in your pool or spa is essential for several reasons. Not only does it ensure swimmer comfort by preventing skin irritation and eye discomfort, but it also protects your equipment from corrosion or scaling, prolonging its lifespan. Additionally, maintaining optimal pH is key to the effectiveness of sanitizers, ensuring that your pool or spa water remains safe, clean, and inviting. The MC125 pH Controller helps you achieve and maintain this balance effortlessly, providing peace of mind and saving you time on manual pH testing and adjustments. By automating the pH regulation process, the MC125 ensures that your water stays within the ideal range for both safety and comfort.

Ideal for: The MC125 is an excellent solution for residential pools, hot tubs, and spas where constant pH monitoring and adjustments are needed. It's also well-suited for hotel facilities, public pools, or wellness centers, where the volume of guests can lead to significant variations in water quality.

This pH controller ensures that your pool or spa water remains crystal clear, safe, and comfortable for swimmers by automating the pH management process. By maintaining the perfect pH, you will not only enhance the user experience but also safeguard your equipment and reduce the need for costly repairs or chemical overuse.

With the MC125 pH Controller, maintaining the right pH becomes a hassle-free task, ensuring that your pool or spa stays comfortable, safe, and well-maintained year-round.

How It Works: The MC125 continuously monitors the pH levels in your pool or spa and integrates seamlessly with a dosing pump (sold separately) to automatically add pH-lowering chemicals when necessary. By constantly tracking the water’s pH, the MC125 ensures that it stays within the optimal range, typically between 7.2 and 7.8, which is ideal for both swimmer comfort and sanitizer effectiveness.

Here’s how the process works:

  1. Set the Desired pH Range: Define the ideal pH level for your pool or spa. The MC125 allows you to easily customize the range, making it ideal for pools, spas, or hot tubs that require specific pH parameters for optimal performance.
  2. Connect to a Dosing Pump: The MC125 links to a dosing pump, which will add pH-lowering chemicals (such as muriatic acid or sodium bisulfate) automatically when the pH goes above your set threshold. This helps to prevent problems caused by high pH, such as scaling on pool surfaces, cloudy water, or reduced sanitizer effectiveness.
  3. Continuous Monitoring and Adjustment: The MC125 consistently monitors the pH, ensuring that any fluctuations are quickly addressed, keeping the water balanced without the need for manual intervention. This is especially useful for high-traffic pools or spas where pH can change more rapidly due to factors like temperature fluctuations, bather load, or rainfall.
  4. Effortless Maintenance: Once set up, the MC125 provides automated, real-time adjustments, removing the hassle of frequent manual testing and chemical dosing. This gives pool or spa owners more time to enjoy their facilities without worrying about the technicalities of water chemistry.

How to Use:

  1. Install the pH Controller: Place the MC125 in a suitable location near your pool or spa system and connect it to the pH probe and dosing pump.
  2. Set the Desired pH Range: Using the easy-to-navigate interface, input your desired pH range (typically between 7.2 and 7.8). The MC125 will monitor the pH in real-time and make adjustments automatically.
  3. Connect the Dosing Pump: Connect the MC125 to the dosing pump, which will automatically add pH-lowering chemicals when the pH level rises beyond the set range. The controller will activate the pump only when necessary, ensuring chemical efficiency and cost savings.
  4. Monitor and Adjust Settings: After setup, the MC125 will manage the pH levels continuously. However, you can adjust settings at any time to suit your needs, whether for seasonal changes or different bather loads.
  5. Enjoy Effortless Maintenance: Once the system is set up, you can focus on enjoying your pool or spa without worrying about pH levels or water balance. The MC125 will handle all the hard work, ensuring that your water remains in perfect condition.

 

Industrial Processes

Industrial processes often require precise pH control to ensure the quality of products, maintain safety standards, and meet regulatory requirements. The MC125 pH Controller offers a reliable and cost-effective solution for industries seeking to automate pH management, reduce manual intervention, and enhance operational efficiency.

Accurate pH levels are critical in various industrial processes, such as electroplating, chemical manufacturing, textile finishing, and industrial cooling. A slight deviation from the ideal pH range can impact product consistency, compromise process efficiency, and lead to costly waste. The MC125 simplifies these challenges by automating pH regulation, reducing the risk of human error, and ensuring optimal conditions for every step of the process.

The MC125 provides automated control, ensuring that pH levels remain stable and fall within the desired range for your production system. By adjusting the pH using a dosing pump (sold separately), the controller ensures that acids or bases are added when necessary, optimizing chemical reactions and product quality.

Ideal for:

Electroplating: Maintains the necessary pH for metal coatings, preventing inconsistent finishes and improving coating adhesion.

Chemical Manufacturing: Supports the proper pH balance for chemical reactions, enhancing product quality and minimizing chemical waste.

Textile Finishing: Ensures consistent pH levels during dyeing and fabric treatments, improving color uniformity and fabric quality.

Industrial Cooling Systems: Regulates the pH of water used in cooling towers, preventing scale buildup and corrosion in heat exchangers.

 

How It Works:

  1. Continuous Monitoring: The MC125 continuously monitors the pH of your system, whether it's a chemical bath, wastewater, or cooling system. The pH probe continuously sends readings to the controller.
  2. Automated pH Adjustment: When pH levels shift beyond the preset limits, the MC125 activates the connected dosing pump to inject the appropriate pH-adjusting solution (acid or base). This ensures that the pH returns to the ideal range without the need for manual intervention.
  3. Customized Control: The system is fully customizable, allowing you to set precise pH thresholds tailored to your specific industrial process. This flexibility is especially useful when dealing with multiple production stages or varying chemical reactions.
  4. Reduced Maintenance and Waste: With the MC125 maintaining optimal pH levels, you can reduce maintenance costs, minimize waste, and improve the overall efficiency of your operation. It also helps to extend the lifespan of equipment by preventing scaling or corrosion caused by incorrect pH levels.

How to Use:

  1. Install the pH Probe & Controller:
    Place the pH probe in the relevant section of your industrial system where pH needs to be monitored (e.g., chemical bath, wastewater treatment tank). Connect the MC125 controller to the probe and set it up in a central location near your system controls. Ensure it is securely connected to a dosing pump (sold separately) for automatic chemical injection.
  2. Set Desired pH Range:
    Based on your specific industrial process, input the ideal pH range for your operation into the MC125 controller. For example, electroplating baths often require a pH range of 2-3, while chemical processes may require a slightly different range depending on the chemicals involved.
  3. Connect the Dosing Pump:
    Link the MC125 to the dosing pump. The pump will automatically inject either acid or base solutions to adjust the pH as needed. This automated process will occur whenever the system detects that the pH is outside the preset range.
  4. Monitor pH in Real-Time:
    With the controller in place, the MC125 will continuously track and adjust the pH of your process. Whenever the pH drifts beyond the set range, the controller will trigger the dosing pump to restore balance. This keeps your industrial processes running smoothly without needing constant manual checks.
  5. Adjust Settings as Needed:
    You can fine-tune the settings of the MC125 to account for different stages of the process or adjustments in the required pH. For example, you might need a slightly more acidic environment at the start of a chemical reaction or a more neutral pH during the final steps of production.
  6. Maintain System Efficiency:
    Regularly check the system to ensure that the pH probe is functioning correctly and that dosing solutions are available. The MC125 will help streamline your operations, reduce human error, and maintain the ideal pH for your industrial processes.

With the MC125, you'll have a reliable, automated solution to keep your industrial processes on track, ensuring optimal product quality, regulatory compliance, and smooth operation across a range of applications.

 

0 of 0 reviews

Leave a review!

Share your experiences with other customers.