The Milwaukee pH600AQ is a Top Find. This version of the pH600AQ is selling with the pH meter, a packet of calibration solution and a storage case.
Here's a video from Milwaukee Instruments that goes through the calibration process for this unit.
Milwaukee pH600-AQ LED Economical Pocket pH Tester with 1 Point Manual Calibration, 0.0 to 14.0 pH, +/-0.1 pH Accuracy, 0.1 pH Resolution - $20.37 + Free Shipping with $25 order
If you want to pick up some additional calibration solution...
General Hydroponics Ph 7.0 Calibration Solution - $7.97 + Free Shipping with $25 order
Related: Amazon, Amazon Fillers, Lab, pH, Great Deals
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