Milwaukee MC110 PRO pH Monitor – professional monitor designed for continuous pH measurement in solutions
The Milwaukee MC110 PRO is a professional bench-top monitor designed for continuous pH measurement in solutions. It provides accurate readings across the full 0.0–14.0 pH range and is engineered for applications where constant monitoring is essential – from hydroponics and aquaculture to laboratories, food industry, and research facilities.
The device features an adjustable setpoint and a visual alarm that activates whenever the measured value exceeds the user-defined range. This ensures immediate alerts when conditions drift out of specification. The unit comes with the professional MA911B/2 pH electrode, delivering stable and repeatable measurements.
Its compact design, intuitive operation, and durability in demanding environments make the MC110 PRO a reliable tool for both professional users and hobbyists seeking precision and consistency.
Key Features
Wide measurement range: 0.0 – 14.0 pH
High accuracy: resolution 0.1 pH, ±0.2 pH (@25 °C)
Adjustable setpoint: 3.5 – 7.5 pH
Visual LED alarm when values exceed limits
Professional MA911B/2 electrode included with 2 m cable
Required calibration solutions: pH 7.01 and pH 4.01 (sold separately)
External 12 VDC power supply for stable performance
Robust design for environments 0–50 °C, up to 95% RH
Compact size: 148.5 × 82.5 × 32 mm, only 160 g
Easy calibration and quick readings on a clear display
Warranty: 2 years on the meter, 6 months on the electrode
For proper calibration, buffer solutions pH 7.01 and pH 4.01 are required (sold separately). Regular calibration is recommended to maintain maximum accuracy.
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement range | 0.0 – 14.0 pH |
| Resolution | 0.1 pH |
| Accuracy (@25 °C) | ±0.2 pH |
| Setpoint range | 3.5 – 7.5 pH |
| Alarm | Visual LED, above/below setpoint |
| Electrode | MA911B/2 (included) |
| Electrode cable length | 2 m |
| Operating environment | 0 – 50 °C, up to 95% RH (non-condensing) |
| Power supply | 12 VDC adapter (included) |
| Dimensions | 148.5 × 82.5 × 32 mm |
| Weight | 160 g |
Milwaukee PRO pH Probe 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.
Store the pH probe in storage solution MA9015. Only use tap water short-term if MA9015 is not immediately available and NEVER store in distilled Water (DI) or Reverse Osmosis (RO) water. This will damage the sensitivity of the probe.
This best way to store the probe is with the probe's cap filled with MA9015 Storage Solution 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 the probe in MA9016 Cleaning Solution for about 20 minutes.
