These adhesives have also been tested and certified by NSF to NSF/ANSI 61, Annex G and is in compliance with California’s Health & Safety Code Section 116875 (commonly known as AB1953) and Vermont Act 193.H.B. Fuller says that the new NSF Certified adhesives have been tested and meet this important criterion for filter manufacturing. H.B. Fuller has been a leading supplier for spiral wound membrane bonding for liquid filtration applications for more than 20 years. The UR3577 products are designed to reduce leak test failures in spiral wound membrane bonding. The LV version is a low viscosity version that gravity feeds very well for equipment that requires this set up. Both versions have a 1:1 mix ratio and can be used for most water filtration spiral wound membrane applications including reverse osmosis, nanofiltration and ultrafiltration.