This economical, easy to use Total/Dissolved Salts/PPM/TEMP test pen, is factory calibrated (+/- 2%) for your convenience. It comes with 2x 1.5 V button cell batteries and a vinyl case with a belt clip, so you can conveniently test water or temperature any time you want.
Battery: 2 x 1.5V Button Cell battery (included) Dual Range: Measures
from 0-999ppm, with a resolution of 1ppm. From 1,000 to 9,990ppm, the
resolution is 10ppm, indicated by x 10image, Factory calibrated Range:0-9990ppm
Accuracy: +/-2% Hold function: Saves measurements for convenient reading and recording Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries