EC/TDS/Temp waterproof tester EC59

DPO10 Portable pH/ORP Meter（Color screen） 1.DPO10

DPD100 Benchtop pH/DO Meter (Polarographic Type)

pH/ORP/Temp Bench Meter, -2.00-20.00 pH, ±2000.0mV, -20.0-120.0 °C