HM Digital™ pH Meter Model PH-80 Resolution: pH 0.1 pH, 0.00–14.0 pH. Accurate to +/-0.1 pH. Hold button and auto shut-off. Automatic calibration: Auto-ranging to 4, 7 or 10 pH. Very reliable and long lasting. Low battery indicator. Clear cap to notice

HM Digital™ pH/TDS/EC/Temp Meter Model COM-300 The COM-300 is an advanced waterproof combo meter with superior accuracy. The meter measures four parameters: pH, electrical conductivity (EC), total dissolved solids (TDS) and temperature. Features includ

Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficient and accurate due to its advanced microprocessor technology. It features a measurement range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments

FEATURES Measures total dissolved solids (TDS) and temperature Automatic Temperature Compensation (ATC) Water-resistant housing Measurement Range: 0-5000 ppm Digital Calibration (push button) Auto-off function, data-hold function and low-battery i

Product Details NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.

HM Digital™ Waterproof pH Meter Model PH-200 Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement range: 0–14 pH with a waterproof housing.

HM Digital™ EC/TDS HydroTester Model COM-80 The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers, drinking water and more.