Geekpure Reverse Osmosis Membrane Replacement-NSF certificated

Operation Specification: FEED WATER PRESSURE :35 - 100 PSI TEMPERATE: 40 - 110°F/5-45°C PH :3.0 -11.0 MAX TDS 1000 MG/L TURBIDITY MAX SDI HARDNESS IRON Life time :15-24months as your feed water quality Shelf life: 3years in original sealed package. More valuable information: ?What is dimension of the Geekpure 75GPD Ro membrane? It is Membrane Dimensions: 2.8' Overall Length, 13.2' Diameter ,with Membrane Housings. ?What is the life time? Our suggestion is 24 months for most tap water (200-500ppm).usually, you replace membrane depends on usage amount and feed water quality. if tap water is very good quality (200ppm or less), you may replace the membrane per 36months. if hard water area, someone replace membrane 6months or 12months. it is time to replace if flow rate is too less or membrane is cloged. ?Could i use it if my water Total Dissolved Solids is over 1000 ppm or well water? Yes, you can use it. even TDS reach 2000 ppm. but you should replace membrane every 12 months or more frequently.max TDS 1000ppm is our suggestion. ?Could i use it to replace my other brand Reverse Osmosis Sytem? Sure,there is matched membrane housing,you may replace old membrane easily and several seconds. ? What is in the box? Just 1pc membrane with membrane housing.but wrench and flow restrictor need to be bought separated. Note: 1. DO NOT FREEZE. 2. If you have chlorinated water, we recommend you use a Carbon/Sediment Pre-Filter. The residual chlorine in municipal or city water will destroy the membrane. if hardness is too high, we recommend you install water softener before Ro unit.