TDS Pocket Tester, Range: 0 to 999 ppm
Pocket TDS Pen, Range: 0 to 1990 ppm
Economical Pocket size pH Tester
pH / Temperature Meter, 0.1 pH Resolution, replac…
Pocket-size pH / ORP / Temperature Meter with rep…
Range: 0 to 1990 uS/cm
EC: 0 – 3999 uS/cm, TDS: 0 – 2000 ppm
Standard Portable pH Meter with 0.01 pH resolutio…
pH / Temp Meter with Resolution 0.01 pH & Acc…
Range: 0 to 1990 μS/cm
TDS tester, Range : 0 to 1990 mg/L (ppm)
Standard Portable DO Meter
O2 Range: 0.0 to…
pH: 0.0 to 14.0 pH, EC: 0 to 1990 uS/cm, TDS: 0 t…
Digital Refractometer for Seawater Measurements
Free chlorine handy photometer
Range: 0.00 …
Total chlorine handy photometer
Range: 0.00…
Phosphate handy photometer
Range: 0.00 to 2…
Iodine handy photometer
Range: 0.0 to 12.5 …
Iron handy photometer
Range: 0.00 to 5.00 p…
Free & Total Chlorine Professional Photometer…