I use this kit to test my carbon filter and deionizer for my car wash. I worry less about drinking water because I only drink beer. This helps me track the PH and TDS levels outside of my filtered setup versus my tap water so I know exactly when to change filters. The result: no water stains and no money wasted by changing filters too early. These counters are very easy to use. Just put it in a glass of water and read the digital display. Built-in temperature compensation means you don't have to waste time waiting for your two glasses of water to reach room temperature - theoretically.
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