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5 and 1 gallons
Most models are variable speed capable when used with speed control (sold separately)
3 adjustable speeds
Unique squeeze-to-open handle with spring-loaded locking catch opens automatically when handles are pressed together
allowing for remote control
HM Digital COM-80 HydroTester Series EC/TDS Meter Fulvic Acid & Humic Acid 5 and 1 gallonsThe HM Digital Waterproof EC TDS Temp HydroTester (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. HM Digital Waterproof EC TDS Temp HydroTester Features: Measures electrical conductivity (EC), total dissolved solids (TDS).
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