| Primary purpose | Evaluates reduction of specified aesthetic contaminants and performance claims in drinking-water treatment units. | Evaluates whether materials and components may adversely affect drinking water through chemical contaminants. | Defines a multi-pass test method for determining particulate-contamination removal performance of hydraulic-fluid filters. | Use the standard that matches the end-use application; these standards are not interchangeable. |
| Most relevant filter applications | Point-of-use and point-of-entry drinking-water filters, including sediment and particulate-reduction products when the applicable claim is tested. | Filter housings, cartridges, seals, membranes, adhesives, coatings, and other components in drinking-water systems. | Industrial hydraulic, lubrication, and other liquid-filtration elements tested under controlled multi-pass conditions. | Confirm whether the supplier is offering potable-water filtration or industrial process filtration. |
| Typical performance information | Claim-specific reduction results, rated service conditions, installation requirements, and replacement guidance. | Material formulation, extraction or leaching evaluation, and compliance documentation for wetted components. | Beta ratio, particle-size test data, pressure drop, flow rate, contaminant capacity, and test-fluid conditions. | Request the complete test report rather than relying only on a nominal micron rating. |
| Particle-removal interpretation | Particle-reduction claims depend on the specific product category, claim, test protocol, and rated conditions. | Does not establish a filter's particle-removal efficiency or dirt-holding capacity. | Uses a multi-pass efficiency approach; beta ratios can be used to calculate single-pass efficiency for the tested conditions. | Compare removal efficiency, pressure drop, and capacity together; do not compare micron labels alone. |
| Potable-water safety | May support drinking-water treatment claims when the product is certified and listed for the relevant claim. | Directly addresses health effects of materials that contact drinking water. | Not a potable-water materials-safety standard. | For drinking-water projects, verify both performance evidence and wetted-material safety. |
| Common evidence to request | Current certification or listing, certified claim, model number, rated conditions, and installation instructions. | Component-level certification or evaluation, materials list, formulation controls, and change-notification procedure. | Laboratory test report showing test rig, fluid, contaminant, particle distribution, flow, pressure, and beta-ratio results. | Match the documentation to the exact model, material, and operating range being purchased. |
| Key limitation | A certification does not automatically validate every contaminant-reduction claim or every operating condition. | Material-safety compliance does not prove filtration efficiency, flow capacity, or service life. | Results apply to the specified test conditions and should not be treated as universal field performance. | Use application-specific validation, pilot testing, and lifecycle calculations for critical systems. |
| Best use in supplier comparison | Screen suppliers serving residential, commercial, and institutional drinking-water markets. | Screen suppliers that provide potable-water-contact cartridges, housings, or assemblies. | Screen industrial suppliers that publish repeatable efficiency and pressure-drop data. | Build a weighted scorecard based on compliance, performance, documentation, capacity, and total cost. |
| Recommended buyer check | Verify the exact certified claim and model listing in the relevant certification directory. | Verify all wetted materials, including elastomers, adhesives, media binders, and housing components. | Verify particle-size distribution, beta ratio, flow rate, terminal pressure drop, and test-fluid viscosity. | Select suppliers whose test evidence corresponds to the actual water quality, fluid, flow, and regulatory market. |