Milwaukee pH51 Waterproof pH Meter for Nutrient Solutions

Know Exactly What Your Feed Is Doing

The Milwaukee pH51 is a handheld digital pH meter for checking nutrient solution before it goes anywhere near your plants. It reads across the full 0.0 to 14.0 pH range to an accuracy of ±0.1 pH, shows the result on a large LCD and is fully waterproof to IP65, so a dunk in the reservoir is not a disaster. Calibration is a manual one or two point routine, the electrode is replaceable, and the four button cells give over 1500 hours of use.

Key Benefits

• Waterproof to IP65 - built to survive the splashes and drops that finish off most reservoir meters.
• Full range accuracy - 0.0 to 14.0 pH to ±0.1, which is all the resolution a feed programme needs.
• Replaceable electrode - swap the probe when it ages instead of buying a whole new meter.
• Simple calibration - manual one or two point calibration keeps readings honest week to week.
• Long battery life - over 1500 hours of continuous use, with batteries included.
• Large clear display - easy to read at arm's length over a tank in low light.

The Trouble with Guessing Your pH

Nutrients are only available to the plant across a fairly narrow pH band. Drift outside it and elements you have already paid for stay locked in solution, and what looks like a deficiency is really a lockout. Colour drops and paper strips get you close but not close enough to spot a slow drift in a recirculating tank. A meter you trust turns feeding from guesswork into something you can repeat.

How to Use

• Calibrate with fresh buffer solution before first use and regularly afterwards.
• Rinse the electrode with clean water between readings, never wipe it dry.
• Dip the probe into the mixed solution and wait for the reading to settle.
• Adjust with pH up or down, stir, then re-test rather than dosing twice.
• Store the electrode wet in storage solution, never dry.

Specifications