Standards World

NSF ANSI 58:2020 pdf free download - Reverse Osmosis Drinking Water Treatment Systems 4.1.1.1 Materials in contact with drinking water shall not impart levels of target compounds or tentatively identified compounds (TICs) that exceed the total allowable...

NSF ANSI 55:2019 pdf free download -Ultraviolet Microbiological Water Treatment Systems 1.2 Scope This Standard covers UV microbiological water treatment systems and components for point-of-use (POU) and point-of-entry (POE) applications. This Standard covers systems which use UV...

NSF ANSI 55:2018 pdf free download - Ultraviolet Microbiological Water Treatment Systems 4.1.3.1 Materials in contact with drinking water shall not impart levels of target compounds or tentatively identified compounds (TICs) that exceed the total allowable concentration...

NSF ANSI 52:2017 pdf free download - Supplemental Flooring 6.2.2.1.1 General purpose flooring Three test samples measuring 2 in X 2 in (50 mm X 50 mm) shall be conditioned at73±3 °F (23±2°C) and 50%±5% relative humidity...

NSF ANSI 44:2018 pdf free download - Residential Cation Exchange Water Softeners 4.1.3.2 TIC identification and quantitation shall be conducted in accordance with Section 4.3.1 .2. Additional TIC identification and quantitation should be verified using a standard...

NSF ANSI 42:2019 pdf free download - Drinking Water Treatment Units - Aesthetic Effects 4.2.2 Exposure water Systems and components shall be exposed to locally available tap water that has been adjusted to contain 50 ± 5...

NSF ANSI 40:2018 pdf free download - Residential wastewater treatment systems 1.2 Scope This Standard contains minimum requirements for residential wastewater treatment systems having rated treatment capacities between 1514 Liday (400 gal/day) and 5678 L/day (1500 gal/day)....

NSF ANSI 37:2017 pdf free download - Air curtains for entranceways in food and food service establishments 1.2 Scope Equipment covered by this Standard includes, but is not limited to, air curtains for entranceways in food and...

NSF ANSI 25:2017 pdf free download - Vending machines for food and beverages 5.11.1 Covers protecting a food zone shall overlap the opening and shall be sloped to provide drainage from the cover surface. Inset covers for...

NSF ANSI 24:2016 pdf free download - Plumbing System Components for Recreational Vehicles 2.5 corrosion-resistant materials: Materials that maintain their original surface characteristics under prolonged contact with the environment and chemical compounds. 2.6 drainage system: Piping that...