Professional Waterproof pH/Temp Meter Very reliable waterproof pH meter measures with an accuracy: of +/- 0.02 pH.
Measures pH and Temperature
Auto-ranging three point calibration with digital fine tuning
COM-100: Waterproof EC / TDS / Temp Combo Meter
Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools &a...