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HM Digital TDS-4TM Meter with Digital Thermometer
HM TDS-4TMRelated Products
HM Digital Meter COM-80

HM Digital Meter COM-80
$32.75 $34.99
COM-80: EC/TDS HydroTester Series The COM-80 is easily the most advanced economically priced, reliable EC/TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. FEATURES: Mea...
HM Digital Meter TDS-3

HM Digital Meter TDS-3
$20.99 $21.99
TDS-3: Handheld TDS Meter with Carrying Case With its rugged design and build, the TDS-3 is an ideal meter (tool) that can be used for any application; Ranging from water purification, to hydroponics to industrial waste water treatment. It comes with a black vinyl carrying case, protecting it when carried in a toolbox. FEATURES: Hold Function A...

HM Digital TDS-4TM Pocket Size TDS Tester Meter with Digital Thermometer, 0 - 9990 ppm. TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy
$23.99 $24.99
The TDS-4TM handheld meter is ideal for testing TDS and salt levels of freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, such as RO and DI, to know when to changes filters and membranes. FEATURES: Pocket size makes it ideal for portability and storage. Hold Function Auto-off Function (Aft...
HM Digital ORP-200 Waterproof ORP Meter, -999 to +1000 mV ORP Range, 1 mV Resolution, +/- 0.5% Readout Accuracy

HM Digital ORP-200 Waterproof ORP Meter, -999 to +1000 mV ORP Range, 1 mV Resolution, +/- 0.5% Readout Accuracy
$83.25 $87.95
Measures Oxidation Reduction Potential (Redox) and Temperature Auto-ranging calibration with digital fine tuning Includes storage solution in a sponge embedded in a clear cap Waterproof housing (IP-67 rating) Simultaneous temperature display The ORP Meter measures oxidation reduction potential (Redox) and temperature The ORP-200 meter has an au...