Get Digital LCD TDS3/TEMP/PPM TDS Meter Water Tester Filter Pen Stick
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This is a digital TDS meter tester, for test the filter water quality purity, check the performance of your water filter, check for hardness (1grain 17ppm), make sure you always drink pure water
100 percent brand new and high quality
This item can be used in water purifiers and filters, food (vegetable, fruits) drink quality monitoring, pools, spas, aquariums and hydroponics