Digital pen-type pH tester

Pocket digital pH meter, precision glass bulb electrode. Range: 0.00 to 14.00 pH, resolution 0.01 pH. Operating temperature: 0 to 60 °C (32 to 140 °F). Large LCD display. To measure: remove the cap, dip the electrode in the solution and switch on. Calibrate with the CAL button using pH 6.86 and 4.00 buffer solutions (or 6.86 and 9.18 for solutions above pH 7). For drinking, tap or well water, aquariums, pools, spas, wine, seawater, aquaculture, food processing and experiments. In the box: 1 pH meter, 2 sachets of buffer powder (4.01 and 6.86), 1 user manual in English.