HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter eligible-for-discount The rockwool will last for

The rockwool will last for the life of your plant

to a maximum of 8 per single power cord

Water saving polymers save water and the leaching of nutrients

SQUARE WAVE FORM

Derived from Bat Guano

HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter eligible-for-discount The rockwool will last forIdeal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. The COM 100 is a professional level EC TDS meter at an unbeatable price. Measures electrical conductivity (EC), total dissolved solids (TDS), salinity and temperature. UPGRADED: Four scales: S, mS, ppm, ppt