Mudder 0.01 high reading precision Digital Pocket Pen Type pH Meter with ATC, Big Size Backlit LCD, 0:00 to 14:00 pH measurement range, measure water, Aquarium pool water (red) (tool)
Hello There, I bought the thing at the pH value in the aquarium to measure. In addition there was 2 buffer solution powder, which can be used to calibrate the part. Since I use the thing every day, I have the meter calibrated every day. In addition,