EC TesterContact Us to PurchaseFeatures Compact and portable pen-type design. Easy to use and give instant results. Easy calibration. Waterproof surface. Specification Model Type Spec Remark EC-0172-2 electrical conductivity (EC) tester meter Conductivity 0-9990 μ s/cm Application Suitable using in water from tap water, bottled water, filtered water, drinking water(RO or ionizer water), farm, aquarium, fish farming...etc.