This standard specifies the terms and definitions, product classification and model naming, requirements, test methods, inspection rules, marking, packaging, transportation and storage of household and similar pre-filter used for eliminating granular material in tap water.
This standard is applicable to pre-filter used at home or similar place with municipal tap water or other centralized water supply as raw water and filter screen or lamination as main filtering measure.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 191-2008 Packaging - Pictorial Marking for Handling of Goods (ISO 780:1997, MOD)
GB/T 1019 General Requirements for the Package of Household and Similar Electrical Appliances
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (GB/T 2828.1-2012, ISO 2859-1:1999, IDT)
GB/T 2829 Sampling Procedures and Tables for Periodic Inspection by Attributes (Apply to Inspection of Process Stability)
GB/T 4706.1 Household and Similar Electrical Appliances Safety Part 1: General Requirements (GB 4706.1-2005, IEC 60335-1:2001, IDT)
GB 5749 Standards for Drinking Water Quality
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests (GB/T 10125-2012, ISO 9227:2006, IDT)
GB/T 17219 Standard for Safety Evaluation of Equipment and Protective Materials in Drinking Water System
ISO 2591-1 Test Sieving; Part 1: Methods Using Test Sieves of Woven Wire Cloth and Perforated Metal Plate
Standard for Safety Evaluation of Equipment and Protective Materials in Drinking Water System (2001), Ministry of Health
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Pre-filter
A kind of mechanical filter with filter screen or lamination as filter element and used for filtering granular impurities in municipal tap water or other centralized water supply, which is independently installed at front end of water purification equipment generally.
