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225 and 506 (#700819
Bluelab pH Meter
hydroponic plants
The only lighting controllers featuring industrial-grade ballast-rated relays
1 National Safety Standards
HM Digital EC/TDS HydroTester Model COM-80 Size:HM Digital Water Resistant Ec/TDS Meter w/ Temperature in C/F Hydrotester (Model COM-80) 225 and 506 (#700819The 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. Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testing. Four scales: EC: S, mS; TDS: ppm, ppt. This tester has automatic temperature compensation (ATC) and is water resistant. Measurement range: 09990
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