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HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy
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SimPure TDS Meter Digital Water Tester, Professional 3-in-1 TDS, Temperature and EC Meter, 0-9999ppm, Ideal ppm Meter for Office Home Drinking Water Aquariums - Walmart.com
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pH / temperature / conductivity / TDS meter, pen-type, pH = 0.00 … 14.00, T = 0 … 50°C, EC = 0 ... 19990 µS/cm, TDS = 0 ... 19990 ppm | PHYWE
4in1 TDS PPM Meter Digital Tester Home Drinking Water Quality Purity Test Tester|eBay Direct Shop - イーベイダイレクトショップ
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Amazon.com: iPstyle Digital TDS Meter Water Tester, PPM Water Quality Tester Measuring Range 0-9999ppm, Ideal for Drinking Water, Swimming Pool, Aquariums, Hydroponics (Grey) (TDS) : Industrial & Scientific
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