The Milwaukee pH Meter MW101 PRO is a robust measuring device for the daily control of the pH value in the aquarium, garden pond, pool etc.. The meter provides accurate readings, is easy to use and comes complete with electrode. The manual 2-point calibration is simple and quick.Milwaukee pH Meter MW101 PRO+ fast easy to read results with large digital LCD readout+ accurate to +/- 0.02 pH with a 0.00-14.00 pH range+ resolution: 0.01 pH+ lightweight and portable+ aasy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize+ simple manual two-point calibration for increased accuracy+ gel-filled, double junction lab grade pH electrode for low maintenance and high performance+ with a screw on cap to ensure proper storage+ dimensions: 143 x 80 x 32 mm+ 3 feet probe cables for extra flexibility when testing+ auto shut off and low power demand for approx. 300 hours of continuous use+ battery, calibration fluid 7.01 and screw driver included