HIDTM Industrial Reverse Osmosis Membrane ranks the best brands in China among RO membrane industry. It 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. Membrane Type  Polyamide thin-film composite Maximum Operating Temperature  113°F(45C°) Maximum Operating Pressure  1000psi Maximum Feed Water TDS  45000ppm PH Range  2~12 Maximum Feed SDI  5 Free Chlorine Tolerance  <0.1ppm