Standards World

NSF ANSI 358-1:2020 pdf free download – Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal” Heat Pump Systems

NSF ANSI 358-1:2020 pdf free download - Polyethylene Pipe and Fittings for Water-Based Ground-Source "Geothermal" Heat Pump Systems 3.3 critical dimensions: Dimensions of a product (e.g., pipes and fittings) that directly affect the fit and function, or...

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ASTM D2419:14 pdf free download – Standard Test Method for Sand Equivalent Value of Soils and Fine Aggregate

ASTM D2419:14 pdf free download - Standard Test Method for Sand Equivalent Value of Soils and Fine Aggregate. 9.4.2 Test Specimen Preparation. Procedure B: 9.4.2.1 Maintaining a free-flowing condition, dampen the material sufficiently to prevent segregation or...

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NSF ANSI 330:2019 pdf free download – Glossary of Drinking Water Treatment Unit Terminology

NSF ANSI 330:2019 pdf free download - Glossary of Drinking Water Treatment Unit Terminology 3.186.1 cation exchange: A process involving the reversible exchange of cations in solution with cations in a solid (cation exchange media). 3.186.2 demand...

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ASTM D2369:20 pdf free download – Standard Test Method for Volatile Content of Coatings

ASTM D2369:20 pdf free download - Standard Test Method for Volatile Content of Coatings. 9.4 Bias—Since there is no accepted standard for volatile content in coatings, bias cannot be determined. 9.5 Precision for Mu/ti-Component >90 % Solids...

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NSF ANSI 170:2017 pdf free download – Glossary of food equipment terminology

NSF ANSI 170:2017 pdf free download - Glossary of food equipment terminology 3.2 air gap: The unobstructed vertical distance thraugh the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank,...

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ASTM D2364:15(R2021) pdf free download – Standard Test Methods for Hydroxyethylcellulose

ASTM D2364:15(R2021) pdf free download - Standard Test Methods for Hydroxyethylcellulose. 20. 1.2 A fence sensor to measure the torque developed by the specimen to the rotational displacement of the rotational element. 20. 1 .3 A coupling...

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NSF ANSI 58:2020 pdf free download – Reverse Osmosis Drinking Water Treatment Systems

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...

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NSF ANSI 55:2019 pdf free download -Ultraviolet Microbiological Water Treatment Systems

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...

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ASTM D2244:14 pdf free download – Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

ASTM D2244:14 pdf free download - Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates. Unlike many previous color difference equations. C1E94 comes with a well defined set of conditions under...

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ASTM D2240:15 pdf free download – Standard Test Method for Rubber Property- -Durometer Hardness

ASTM D2240:15 pdf free download - Standard Test Method for Rubber Property- -Durometer Hardness. 5.1.2.3 Operating Stand, 2 (indentor to specimen type). shall be capable of applying the indentor to the specimen in a nanner that minimizes...

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