We have a qualified, efficient group to offer excellent support for our clients. We normally follow the tenet of customer-oriented, details-focused for Manufacturer of 4021 RO Membrane for industrial RO System, should you have any query or wish to place an initial purchase be sure to never hesitate to contact us. We have a qualified, efficient group to offer excellent support for our clients. We normally follow the tenet of customer-oriented, details-focused for RO Membrane Manufacturer, Since the establishment of our company, now we have realized the importance of providing good quality items and the best before-sales and after-sales services. Most problems between global suppliers and clients are due to poor communication. Culturally, suppliers can be reluctant to question things they do not understand. We break down these barriers to ensure you get what you want to the level you expect when you want it. RO Membrane Manufacturer HIDTM Membrane ranks the best brands in China among the RO membrane industry. RO Membrane Manufacturer has won the trust of thousands of families for feeding the reliable purified water over 10 years. Each membrane is made of HID developed & pre-examined sheet and goes through stringent making processes as well as in-house quality inspection & testing before delivery. HID Membrane has been certified by SGS & China Jiangsu Sanitation Bureau wrt drinking water membrane elements. Model RT-2521 HF RT-2540 HF RT-4021 HF RT-4040 HF RT-8040 HF Performance Stable Desalination % 98 98 98 99 99.3 Min. Desalination % 97 97 97 98 98.5 Mean Permeable Flow GPD (L/d) 380(1300) 780(2800) 1000(3400) 2800(9500) 11000(41000) Active Film Area ft2(m2) 13 (1.2) 28 (2.6) 36 (3.3) 97 (9) 400 (37) Test Conditions Pressure 100psi(0.7Mpa) 225psi(1.55Mpa) Water Temp. 25℃ 25℃ Concentration(NaCl) 2000ppm 2000ppm Water PH 6.5 to 7.5 6.5 to 7.5 Recovery Rate % 15 15 Operating Conditions Max. Operating Pressure 600psi(4.2Mpa) 600psi(4.2Mpa) Max. Feed Water Temp. 45℃ 45℃ Max. Feed Water Silt Density Index (SDI) 5 5 Feed Water Chlorine Tolerance < 0.1ppm < 0.1ppm Feed Water PH Range, Continuous Operation 3 to 10 3 to 10 Feed Water PH Range, Short-Term Cleaning 2 to 12 2 to 12 Max. Pressure Drop of Single Membrane 15psi(0.1Mpa) 15psi (0.1Mpa) 1. Permeate flow rate and salt rejection is based on testing conditions: 25℃, PH 7.5, 20% recovery. 2. Stabilized salt rejection is generally achieved within 24-48 hours of continuous use, depending upon feedwater characteristics and operating conditions.