How & When Do You Change RO Membrane Of Your Water Purifiers ?

RO Membrane, change करने से पहले यह Confirm होना जरूरी है कि RO Diaphragm Booster Pump का Pressure सही है या नहीं ।
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KNL Healthy Drops, KNL-NF40-AR, NF (Nanofiltration) RO Water Purifier with Alkaline Regulator, Used for 150 ppm to 350 ppm raw Water tds, 13 LTR Detachable Tank, Safer Than UV+UF+TDS Adjuster System- https://amzn.to/2IHrvLA

Original Xiaomi TDS Tester Water Quality Meter Tester Pen Water Measurement Tool:-https://bit.ly/2WQDInF

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