TDS Meter, Electronic Water Tester with 0-9990 PPM
TDS Meter, Electronic Water Tester with 0-9990 PPM Measurement Range, Hand Held Digital Water Test Pen for Farming, Aquariums, Pools, Household Drinking Water (Blue) Check Offer Price ★【FAST AND ACCURATE READINGS】– Just turn it on, dip in about 1 inch deep of water and read display, Large digital display makes it easy to read. ★【AUTOMATIC CALIBRATION】– No need any adjustment...