Category : Home/FamilyHanna (TDS-1) TDS Tester; 1-999 PPM, 10 PPM RES.Price: USD28.13 Housed in a pocket sized ABS case, this electronic Total Dissolved Solids tester is very durable. It is the ideal meter for hydroponics, fish farming, agriculture, plating and water purification applications. TDS 1 is supplied complete with protective cap, calibration screwdriver and 4 x 1.4V batteries and storage case.Other products from IsoPure Water |