TDS testerContact Us to PurchaseFeatures Compact and portable pen-type design. Easy to use and give instant results. Waterproof surface. Specification Model Type Spec Remark EC-0172-1 water quality purity filter pen 9V, range 0-9990 ppm Application Suitable using in water from tap water, bottled water, filtered water, drinking water(RO or ionizer water), farm, aquarium, fish farming...etc.
