Considered to be the most reliable for home drinking water, Dow Filmtec TW30-1812-75 Reverse Osmosis Membrane features advanced membrane technology and automated fabrication which permit the RO membrane elements to deliver consistent performance for all customers. Dow Filmtec TW30-1812-75 Reverse Osmosis Membrane can be used in many brands of Reverse Osmosis Water Filtration Systems. It is NSF/ANSI Standard 58 listed. The home drinking water elements are rated at 50 psi and will purify about 20% more water than competitive elements rated at 60 psi. The maximum operating temperature is 113°F (45°C) and the maximum operating pressure is 300 psig.