Portable Dissolved Oxygen Meter - Range: 0.00~19.99mg/l, Resolution: 0.01mg/l , Dimensions: 123ã—72ã—33mm, Color: White, Temperature: 0~45â°c, Humidity: ≤95%

KL-1383BW Industrial Digital Conductivity Meter - Black, 60mm×55mm×23mm, 0~199.9ms/cm Accuracy 2 FS | 4-Digit LCD, Auto Temperature Compensation, 95% Humidity Resistant

KL 98306 Conductivity Tester - Plastic, 51x175x25 mm, White | Digital Display, 0~1999 μs/cm Range, ±2% Accuracy, Automatic Temp Compensation

KL-099 Waterproof pH ORP Temperature Meter - 170 x 40 x 23 mm, Blue | Automatic Temperature Compensation, Replaceable pH Electrode, Floats

KL-009(I)A Pocket Size PH Meter

Advanced Handheld pH Meter - 0.00~14.00 pH Range, IP56 Waterproof Floating Design | Easy-to-Use, Automatic Temperature Compensation, Economical 67g Weight

KL-117 Six In One Multi-Parameter Water Quality Monitor - High Precision, 152x80x20mm, Matte Black | Electric Operated, Rechargeable Batteries, Continuous Online Monitoring, Large Three Screen Display

KL-026 Multi-Parameter Water Quality Monitor - Plastic, Blue and Black, Digital Display | Rechargeable Battery, BNC Electrode, Industrial Use

Kelilong Waterproof Pen-Type pH Meter - 165x26x26 mm | Automatic Temperature Compensation, Lightweight Design, One Button Operation, Easy Self-Calibration

EC-3587 Waterproof pH, EC, and Temperature Meter - Accurate Measurements, Automatic Temperature Compensation, Portable and Lightweight Design

KL-98105 pH Tester - 175mm x 51mm x 25mm , 0.00~14.00pH Range, Interchangeable Electrodes, Large LCD Display, Lightweight at 77g