MILWAUKEE - PH600 - PH TESTER DIGITAL PENMilwaukee PH600 Digital pH Pen, use digital accuracy to keep pH in your target range for better results. Fast, accurate results with digital LCD readout Easy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize Simple one point calibration with an easy to use trimmer located on the back of the pH tester to protect from accidental splashes Cap to protect the pH sensor and keep it wet when stored upright Low