Details
In-Line dual 3/8" TDS meter. Can test the TDS of the water on the raw side and the treated side of your drinking water system. Hook up one side to the raw (untreated) water, to see what the TDS is before getting treated. Then hook up the other side to the treated water, to see what the TDS is coming out of the faucet. This is a great way to tell when to change your filters. Old filters can release old bacteria back into your drinking water. Dual Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x 10' image.)
