PH-86L Waterproof Pen-type PH, EC & Temperature 3-in-1 Tester PH-86L Waterproof Pen-type PH, EC & Temperature 3-in-1 Tester Smart pen-type 3-in-1 tester for measuring water and wettable solids such as soil, dough, milk, fruits, meat, etc. Powered by two high-capacity AAA batteries, eliminating frequent calibration. Two-point button calibration with automatic recognition of pH standard buffer solution. Automatic temperature compensation ensures accurate measurement across the full range. Automatic power-off effectively conserves battery energy. Replaceable electrode reduces maintenance and usage costs. Fully waterproof design provides complete protection for the device in harsh environments. Technical Parameters: Model PH-86L Measuring Range PH 0.00～14.0PH EC 0.00~19.9mS/cm Temp 0～50℃ Resolution PH 0.1PH EC 0.1mS/cm Temp 0.1℃ Accuracy PH ±0.1PH EC ±2%FS Temp ±1℃ Automatic Temperature Compensation 0℃～50℃ Battery 2×1.5V (AAA Batteries) Operating Temperature 0℃～50℃ Calibration Method Automatic 2-point calibration Dimensions 210 x 40 x 25 mm Weight 100g