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EC / TDS / PPM Meters

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Bluelab Original Truncheon Meter
With its super tough, high quality, fully waterproof design, no calibration required, daylight reada..
$140.00
HM Digital Water Resistant Ec/TDS Meter w/  Temperature in C/F Hydrotester (Model COM-80)
Measures electrical conductivity (EC), total dissolved solids (TDS).  Exellent for nutrient ..
$47.95
HM Waterproof EC/TDS/Temp Combo Meter
Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three diff..
$76.95
Oakton Waterproof EcoTestr TDS Low
New OAKTON ECOTestr TDS Low pocket meter features a large ergonomically designed display so that you..
$85.95