Check the listing for details. Used ULP-4021 950 GPD Commercial RO Membrane. Color: Beige, Condition: Used. Listed at 133.97 USD. Item Condition, Returned items, open box, ( light scratches ) as shown in the pictures or might not show and might have some chips or cracks on the membrane outlet that will never affect the membrane performance. Detailed Description:ULP-4021 950 GPD Commercial RO MembraneReverse Osmosis membrane elements for commercial drinking water systems are the industry's most reliable method of water filtration. Advanced membrane technology and automated fabrication allow these elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. Our Reverse Osmosis membranes are shipped dry for convenient handling and long shelf-life. Our ISO9001 rated membranes are rated at 60 psi and will purify about 20% more water than competitive elements rated at 60 psi. We suggest changing your membrane every 2 yearsSpecifications950 Gallon Per Day Membrane for Commercial Reverse Osmosis systems.Certified to ISO 9001 StandardsRemoves particles down to 1/10,000th of a micron (removing 98% of impurities including organic, inorganic contaminates, chemicals, ETC.).Membrane FeaturesProvides stable, high rejection of contaminates even with high TDS water sources.Advanced membrane technology with innovative thin layer composite membrane design.More consistent performance with less fouling requiring less frequent cleaning and change outs.100% dry-stored membrane maximizing shelf life.General InformationThe first full tank of permeate should be discarded, DO NOT use this initial permeate for drinking water or food preparation as it may contain carbon fines and manufacturing by-products.Keep membrane moist at all times after initial wetting.To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.The membrane shows some resistance to short-term contact with chlorine (hypochlorite). Continuous exposure, however, may damage the membrane and should be avoided.If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void. USAGE It is widely used for automatic water dispenser in residential area and school, direct drinking equipment in office, pure water machine in medical laboratory,small-sized desalination device etc.SPECIFICATIONS & PARAMETERS ModelActive Membrane Area ft2(m2)Permeate Flow GPD(T/D)Stable Rejection Rate (%)ULP-402136(3.4)950(3.6)99.3STANDARD TEST CONDITION Concentration of Solution (NaCl)Temperature(?)pH ValueOperating Pressure psi(MPa)Recovery Rate (%)1500ppm257.5-8150(1.03) 8 Notes: The permeate flow of single membrane element may vary with in ±15%. Operating Limits and Conditions of Membrane Element: Max.Working Pressure600 psi(4.14MPa)Max. FeedWater Temperature45 ?Max. Feed Water Flow3.6m3/hMax. FeedWaterSDI15 5.0Free Chlorine Concentration of FeedWater0.1mg/LpHRange of FeedWaterDuring Continuous Operation3-10pHRange of FeedWaterDuring Chemical Cleaning2-12Max. Pressure Drop of Single Membrane Element10psi(0.07Mpa) ULP-4021 Reverse Osmosis Membranes for many Applications such as:Car Washes Whole House Reverse Osmosis Commercial Reverse Osmosis Agricultural Industrial Commonly referred to as: Extra Low Pressure, Extra Low Energy, Ultra Low Pressure, or Ultra Low Energy 4" x 21" Fits nearly all standard 4" x 21" Membrane housings stainless steel, PVC, or Fiberglass