Description Feature 1Multifunctional water quality pen product, can measure pH, ORP oxidationreduction potential, H2 hydrogen, and temperature water quality test pen. 2It has high performance, pen-shaped design, fast numerical stability and accurate calculation results. 3Wide range of uses, can be used to test water, swimming pools, spas, hydroponics, food, wine and beer, etc. 4Equipped with highquality Ti alloy probe and reliable automatic temperature compensation (ATC), all the time will maintain accurate readings at various temperatures. 5Just turn on the PH meter and gently agitate the water, then a stable reading will be displayed on the LCD within a few seconds.Item Type: Water Quality Monitor Test PenProduct Material: ABS+Ti alloyPH Test Range: 0.01-14.00pHResolution: 0.01pHAccuracy: 0.05pHORP Test Range: 1200mVResolution: 1mVAccuracy: 2mVH2 Test Range: 0-2400ppd; 0.001-2.400Resolution: 2ppb; 0.02ppmAccuracy: 10ppb; 0.01ppmTemperature Test Range: 0.1-60.0 32.0-140Temperature Accuracy: 0.5Temperature Resolution: 1/Battery: 3x1.5LR44 (delivered without battery)Display: LCD digital displayWaterproof Rating: IP67Size: Approx. 183mm / 7.2in37mm / 1.5in .wang-edit-text{ font-family:Arial important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Water Quality Monitor Test Pen1 x User Manual3 Packs Calibration Powder