Milwaukee MC811



Why Guard when you can Monitor! using a Milwaukee MC810 MAX pH/EC/Temp Monitor lets you monitor your solutions 3 vital stats: pH, EC & Temperature levels 24/7 365 automatically! 

The Milwaukee MAX MC811 is a dream for all recirculating hydroponic systems such NFT, Flood & Drain & (R)DWC. 

Accuracy to ± 0.2 pH with two point manual calibration, EC accuracy of ±2% Full Scale and ±0.5 °F (0.3 ° C) temperature accuracy.

Just calibrate the parameters and begin to monitor 24/7 365 for peace of mind instant solution status!

Fast & easy to read current results with 3 large digital BACKLIT LCD readouts.
Accurate to ±0.2 pH (0.0 pH to 12.0 pH).
Accurate ±2% Full Scale EC.
Simple two-point pH calibration and one point EC, for increased accuracy with manual trimmers for easy adjustment.
Gel-filled, double junction MA911B/2 (included) lab grade pH electrode for low maintenance and high performance.
2m  long probe cables for extra flexibility when testing.
12 VDC power supply.

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.

The glass bulb loses sensitivity with use and will eventually fail. This is true of all pH probes.

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.

To extend the life of your pH electrode in the following ways:

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.

Residue from the sample can impact the sensitivity of the sensing bulb and clog the junction. This is especially true if the sample has a lot of organic material. We recommend regularly soaking your electrode in cleaning solution.

The pH sensing bulbs become less sensitive over time so make sure that you are calibrating reguarly to keep your MAX monitor accurate. Also, calibrate after cleaning or a long period of storage.


pH Range: 0.0 - 12.0 pH
pH Resolution: 0.1 pH
pH Accuracy: ±0.2 pH
pH Calibration: Manual, 2 points (trimmer)
pH Probe: MA911B/2 (included)
EC Range: 0.00 - 5.00 mS/cm
EC Resolution: 0.01 mS/cm
EC Accuracy: ±2% Full Scale
EC Calibration: manual, 1 point (trimmer)
EC Probe: MA812 (fixed, Included)
Temperature Range: 14.0 to 140.0°F (-10.0 to 60.0°C)
Temperature Resolution: 0.1°F / 0.1°C
Temperature Accuracy: ±0.5°F / ±0.3°C
Temperature Calibration: Factory Calibrated Temperature Compensation: Automatic, 41 to 122°F (5 to 50°C), (TDS / EC Readings Only)
Temperature Probe: Stainless Steel (fixed, included)
Power Supply: 12 VDC adapter (included)
Dimensions: 160 mm x 110 mm x 35 mm 
Mounting kit: (Included)
Weight: 560 g
More Information
Product NameMilwaukee MC811
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