TDS meter tester for testing the purity of filter water quality. Help you drink pure and safe water, protect your health Hold function: can lock readings for convenient reading and recording. and can quickly measure once every five seconds. Dual Range: Measures 0-999ppm with 1ppm resolution. Measures from 1,000 to 9,990ppm, resolution is in 10ppm increments, indicated by a flashing “x10” image. Easy to use: Simply turn on the TDS meter and gently stir the water, then the stabilized readings will be automatically locked to the LCD in 10-30 seconds, automatically shuts off the meter to save batteries if not used for more than 10 minutes. Large Application: Check your water filter performance and water hardness. Used for water purifiers and filters, aquariums, hydroponics, beverage quality monitoring, swimming pools and spas.
