TDS Meter, Electronic Water Tester with 0 9990 PPM Measurement Range, Hand Held Digital Test Pen for Farming, Aquariums, Pools, Household Drinking (Blue)

【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 screwdrivers, just finish the calibration with Auto calibration with 1-3 seconds, Measure total dissolved solids in water(tds),Know exactly when to change water filters. 【PORTABLE DESIGN】-- Handheld style and compact carrying case makes it conveniently fits in your pocket or bag and goes anywhere. 【WIDE APPLICATION】-- Ideal for home and laboratory TDS testing applications, including drinking water, swimming pools, aquariums, hydroponics, etc. 【100% QUALITY WARRANTY】 -- We supply Quality Warranty more than 6 months. If your TDS Meter was broken or you got a defective, please don`t hesitate contact our customer service team, they will serve you enthusiastically. 【CERTIFICATE OF REGISTRATION FOR UK DESIGN】Design number: 6366406