Features:Reverse Osmosis (ro) Membrane, material made by way of means of high quality. Used for ingesting water purification, cut bacteria, heavy metal, upgrade taste, odor. Apply to most family pure water machine and water purifier. Smooth cover, prolonged existence use, practical:Name: Reverse Osmosis (ro) Membrane Usel: Water Filtration Length: Approx 30 cm Diameter: Approx 5cm Working Temperature: 5-50℃ Working Pressure: zero Mpa Type/Weight: 50GPD/194g, 75GPD/200g, 100GPD/216g,125GPD/250gNOTE: For various monitors, the colour may possibly fluctuate slightly. Besides, please allow some mistakes of instruction manual measurement, thanks to your understanding!