橡胶的NSF61标准检测范围ANSI/NSF

xuyongCtb121212：橡胶的NSF61标准检测范围
ANSI/NSF Standard 61 -------- Drink Water System Components----Health Effects 美国ANSI/NSF61标准，迄今为止，该标准一共修改了18次，在1997年总共修改了3次，目前的2004版本为最新版，其英文全称是“Drink Water System Components----Health Effects” ，如果直接翻译成中文应该是“饮用水系统元件—健康影响”是一本和饮用水健康卫生和环保有关的标准。
由美国的NSF制定和颁布的，而美国NSF是一家致力于安全卫生环保的非营利机构。而本该标准的起草机构包括：NSF International(国家安全卫生基金会), American Water Works Association Research Foundation（美国水工业研究基金会） , Association of State Drinking Water Administrators（国家饮用水管理者协会）, The American Water Works Association（美国水工业协会）
此标准编制基本目的可引用原文的说明“ Purpose：This standards establishes minimum health and impurities that are indirectly imparted to drinking water from products, components or materials used in drinking water system. This standard does not establish performance, tastes and odors or microbial growth supports for drinking water system products, components or materials.” 即本标准建立的目的是为了最大程度地控制涉水的产品、配件或材料在饮用水中产生的非健康和非纯净物质间接与饮用水结触所产生的不利影响。
与水接触的任何产品，如管道、配件、涂层、阀门、垫圈、水表、水泵和水龙头等等。此标准并不对再饮用水中使用的涉水产品、配件或材料的性能、味道、嗅觉或微生物在饮用水中滋生等提供依据。由于篇幅所限，现节选NSF61标准部分内容，
B.9 Extraction water preparation (This was B.10 in ANSI/NSF 61 – 2004a)
B.9.1 Chemical characteristics Four extraction waters shall be available for exposure:
a) pH = 5, with 2 mg/L available chlorine and 100 mg/L hardness;
b) pH = 6.5, with 2 mg/L available chlorine and 100 mg/L hardness;
c) pH = 8 (organic analysis), with 0 mg/L available chlorine and 100 mg/L hardness;
and d) pH = 10, with 2 mg/L available chlorine.
B.9.2 Reagents
B.9.2.1 Reagent water Reagent water shall be produced through one or more of the following treatment processes: distillation, reverse osmosis, ion exchange, or other equivalent treatment processes. The reagent water shall have the following general water characteristics: – electrical resistivity, minimum 18 MΩ-cm at 25° C (77 °F); and – total organic carbon (TOC) maximum 100 μg/L. For each specific analyte of interest, the
reagent water shall not contain the target analyte at a concentration
© 2004 NSF NSF/ANSI 61 – 2004e
环测威检测