Amazon | Digital LCD TDS3TEMPPPM TDS Meter Water Tester Filter Pen Stick

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This is a digital TDS meter tester For testing the filter water quality purity check the performance of your water filter check for hardness 1grain17ppm make sure you always drink pure water Features 100 percent brand new and high quality This item can be used in water purifiers and filters food vegetable fruits drink quality monitoring pools and spas aquariums hydroponics Hold Function Saves measurements for convenient reading and recording Autooff Function Turns off meter after 10 minutes of nonuse to conserve batteries Dual Range Measures form 0999ppm with a resolution of 1ppm From 1000 to