Accurate And Reliable: To achieve high accuracy,equipped with premium quality titanium alloy probe,and reliable Automatic Temperature Compensation (ATC) ensures reading always be accurate at various temperatures.Its a must have handy hard water tool test for every household,testing for pond water,tap water,filtered water,distilled water,bottled water,well water,refrigerated water,and water hardness test etc.Easy And Instantly: Just turn TDS meter on and stir water gently,then stabilized readings will be auto-locked on LCD in seconds,and the tds ppm meter will shut off automatically if without operation over 5 minutes.Multipurpose TDS Tester: Test drinking water purity to ensure it's healthy,monitor if Reverse Osmosis (RO)/DI System works properly,whether filter need replaced,maintenance aquarium,hydroponics(test nutrients),pool and spa,etc.All-Round 24H Sale Service: The professional material insure the quality of item. Please contact our Enlewlth LLC Customer Service or send email to our company's mailbox,we will give you a satisfied solution in 24 hours.Main Material: ABS,Eletronic Parts; Main Color: Black,White; Item Size: 15.2 x 3 x 1.2cm / 5.98 x 1.18 x 0.47(L * W * H); Weight: 94g / 3.32oz; Package Include: 1 x Water Quality Test,1 x Gift Box,1 x Manual.