3 Review(s)

Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testing Factory Calibrated: The COM-80 meter is calibrated with a 1413 ÃÂõS solution Automatic Temperature Compensation (ATC) and water resistant Four scales: EC: ÃÂõS, mS; TDS: ppm, 0.5 (NaCl) & 0.7 (442) Digital Calibration (push button) to any point within the meterâÃÂÃÂs range