The 24–7 Nutrient Monitor is a great all around meter for nutrient applications needing constant monitoring. It measures PPM, pH and Temperature and with its large illuminated display it is easy to read from a distance. Calibration screws are conveniently located on the front for easy access. All 24-7 meters sold include 4-ounce bottles of buffer solutions for calibration.
The 24-7 Nutrient Monitor has a pH range of 0.0 - 14.0 with a ± accuracy of 0.1 pH. The PPM range is 0 - 9990 with and accuracy of 2%. Use a 1382 PPM calibration solution. Temperature range is 41°F - 95°F with an accuracy of ±2°F.