With handheld and portable TDS tester, you can test the quality of various water in the following situations: water purification applications, wastewater regulation, aquaculture, hydroponics, agriculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, food processing, physics & chemistry teaching, water treatment, cosmetics, wine, home, office, travelling and more. 1pc in PVC bag, 30pcs in inner box, 240pcs in carton box.
