This handy hand-held pocket meter checks your Reverse Osmosis membrane performance. Simply turn it on and dip the end in a glass of water - it instantly give you a reading of TDS (total dissolved solids). To check membrane performance, test untreated water and then your RO water. Compare the results to determine the percent of removal. Most people replace the membrane when removal drops below 85%. The tester measures Total Dissolve Solid in the water up to 1,999 ppm level for processing and with the same pen measure the process clean water to as low as 1ppm level, A Direct Reading Instrument. The only test pen that is able to measure water safety before and after processing.
Includes vinyl case.
Price: $69.99
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