The Combo HI 991404 and HI 991405 series meters from HANNA Instruments are designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators continuously monitor the three most important nutrient parameters in hydroponics, greenhouses and horticultural applications with a single instrument. These indicators feature a large, dual-level, backlit LCD to give you instantaneous readings of pH, EC or TDS and temperature, even from a distance.

Wall Mountable and powered using AC 120V

Product Code: HI991404 (low range) or HI991405 (high range)

Range:

HI991404: pH 0.0 to 14.0 pH by 0.1 EC 0 to 3999 μS/cm by 1 μS/cm TDS 0 to 2000 ppm by 1 ppm

HI991405 pH 0.0 to 14.0 pH by 0.1 EC 0 to 20.00 mS/cm by 0.01 mS/cm TDS 0.00 to 10.00 ppt by 0.01 ppt