high accuracy ph water tester: With the high-sensitivity probe, you can quickly read the results. The wide measuring range and high resolution of this 4-in-1 pH tester that you can measure different kinds of liquids. 4 in 1 multifuntional measurement: pH meter for water can measure pH, EC (electrical conductivity), TDS (total dissolved solids), Temperature. Just press {MODE/CAL} key to switch the readings of pH, EC, TDS. Automatic Temperture compensation: With the pH tester water's accurate ATC, the pH/TDS/EC/Temp function can accurately read sample values over a wide temperature range of 32°F-140°F. Effectively solve the problem of inaccurate measurements caused by changes in liquid temperature. Easy to use ph tester : Simply immerse the water pH tester's electrode in the target solution, press and hold the HOLD/TEMP button after the reading is stable, and then read the data. Before using the pH meter again, please clean the probe carefully to avoid affecting the reading. Backlit Display water tester : The data can be clearly seen even in the dark. The large green backlit display makes it easy to read the pH tds ec meter at odd angles and in low light. Press the {HOLD/TEMP} key to lock the reading, making it easy to record readings., Weight: 0.30534023287 pounds, Manufacturer: rirue