Manufacturer price waterproof ATC pH/H2 / ORP /Temperature 4 in1 Meter Feature: [4-in-1 water quality test] YIERYI PH meter is designed with 4-in-1 function, which can be measured PH, ORP, H2, and Temperature ... Read More
YIERYI LED Pen-Type Digital ORP Meter ORP-969 electronic redox Tester Water Quality Analysis Specifications Range -1999mV ~ 1999mV Resolution 1mV Accuracy 5mV Operating Temperature 0degrees ~ 50degrees (32F ~ ... Read More
