The Pure Blue H20 Stage 2 – 1:1 Membrane is a white plastic water filter designed for use in a 3-stage reverse osmosis system. It is compatible with Pureblueh2o and Pure Blue H20 brands, and is suitable for both commercial and household use. The membrane effectively removes sediment contaminants through the reverse osmosis filtration method, providing clean water for drinking. This product has a 50-gallon capacity and is made in the United States, ensuring high quality and efficiency in water purification.