--- title: Potable Geomembrane liner NSD/ANSI 61 Certification description: POTABLE WATER Geomembrane liner NSD/ANSI 61 Certification for potable water and industrial grade. Strong polypropylene with polyester scrim 36,45, 60 mil --- - [Privacy Notice](https://www.globalplasticsheeting.com/privacy-notice?hsLang=en-us) | - [Shipping & Returns](https://www.globalplasticsheeting.com/shipping-and-returns?hsLang=en-us)   [![Global Plastic Sheeting, Plastic Sheeting Specialist](https://www.globalplasticsheeting.com/hs-fs/file-2336161311-png/images/logo-mobile.png)](https://www.globalplasticsheeting.com/?hsLang=en-us) ![side_img37](https://www.globalplasticsheeting.com/hs-fs/file-2350449328-png/images/side_img37.png) ![side_img37](https://www.globalplasticsheeting.com/hs-fs/file-2350449328-png/images/side_img37.png) Click to call from your cell: [+17605979298](tel:+17605979298) # **ANSI/NSF-61 Geomembranes Drinking Water Contact Certification (Potable Grade)** ## **Reinforced Polypropylene Geomembrane** Reinforced Polypropylene Geomembrane is a heat-weldable polyester reinforced sheet designed for floating covers and liners in potable and industrial water containment applications. The membrane is specifically formulated for long-term use in buried or exposed geomembrane applications. T   **IMPORTANT:** The membrane is based on a UV-stabilized polypropylene copolymer that does not require either polymeric or liquid plasticizers to maintain flexibility. Plasticizes from other commercial grade liners can leech harmful chemicals into drinking water/ water supply. This can be extremely hazardous to human health.  Examples of this would be found in PVC- Polyvinyl Chloride liners.   Physical properties of the membrane are enhanced by a strong, polyester fabric (scrim) that is encapsulated between the polypropylene based top and bottom plies. The combination of the fabric and polypropylene provide reinforced membranes with high breaking / tearing strength and puncture resistance. The relatively smooth surface of the GeoMembrane facilitates production of a total surface fusion weld that creates a consistent, watertight monolithic sheet. - Potable grade liners with NSF/ANSI 61 certification are geomembrane liners designed for contact with drinking water. - The certification is issued by the National Sanitation Foundation (NSF) and the American National Standards Institute (ANSI). - These liners undergo rigorous testing to ensure they do not introduce harmful chemicals or contaminants into the drinking water supply. - The certification evaluates the liner's performance to meet strict limits and criteria for impurities, including heavy metals and volatile organic compounds (VOCs). - Potable grade liners with NSF/ANSI 61 certification are used in water storage tanks, reservoirs, and other water containment systems to maintain water quality and safety. - They provide assurance to regulatory authorities, water utilities, and consumers that the liner is of high quality and safe for use with drinking water. - The liners play a critical role in preserving the integrity of water containment systems and delivering clean and safe drinking water to the public. ## **NSF Certified Applications:** It is important for applications that come in close contact to the human food supply to use NSF certified liners. Candidates would include: *  Hydroponic and Organic Farming  *  Aquaponics *  fish ponds *  irrigation ponds *  canals to name a few.     **FEATURES:**   **ANSI/NSF-61 Drinking Water Contact Certification (Potable Grade)** - Outstanding heat seamability - Outstanding puncture resistance - Plasticizer-free, does not contain liquid or polymeric plasticizers - Excellent low temperature impact resistance - Excellent chemical and environmental stress-cracking resistance - Exceptional resistance to solar UV, ozone, and oxidation - Low water vapor permeance and water absorption - Hot melt extrusion processed (not calendered) for complete scrim encapsulation - Warp knitted fabric (not woven) for smooth surface and greater thickness-over-scrim - Polyester reinforcing fabric which is resistant to degradation by soil bacteria ### **Polypropylene Geomembrane Colors and Mil Thicknesses** Available colors are black and tan in 36-mil, 45-mil and 60-mil thicknesses. Special colors, with minimum quantity requirements, are available on request. #### **Roll Size** Stocked roll sizes are - 12 ft wide by 600 ft in 36-mil - 45-mil and 12 ft wide by 400 ft in 60-mil. ### **Polypropylene Geomembrane  Typical Properties and Characteristics** - 0.17 lb/ft 2 (0.83 kg/m 2 ) for 36-mil - 0.21 lb/ft 2 (1.03 kg/m 2 ) for 45-mil - 0.29 lb/ft 2 (1.42 kg/m 2) for 60-mil membrane. ### Do you have a quick question regarding these geomembrane liners? 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