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.