Hydrologic DM-2 Industrial Dual TDS Monitor reflective-and-greenhouse-films and spider mites

and spider mites

UL-Rated for Damp Locations – Safe for humid greenhouse and indoor growing environments

7 µmol/J and 1700 PPF

increasing your growing success with starts

Dual resettable breakers—protects lamp and household circuits

Hydrologic DM-2 Industrial Dual TDS Monitor reflective-and-greenhouse-films and spider mitesMeasure the untreated water coming in vs. the purified water going out of your reverse osmosis system at any time. This is important in determining when the RO membranes need to be changed. Auto Off function conserves battery power. The unit shuts off automatically after 20 seconds. 90 ppm, the resolution is in 10 ppm increments, indicated by a blinking 'x10' image. Factory calibrated: all meters are calibrated with a 342 ppm NaCl solution. Meters can