QB/T 2334-1997 化妆品中紫外线吸收剂定性测定紫外分光光度计法
作者:标准资料网 时间:2024-05-19 10:06:23 浏览:9533
来源:标准资料网
基本信息
| 标准名称： | 化妆品中紫外线吸收剂定性测定紫外分光光度计法 |
| 中标分类： |
轻工、文化与生活用品 >>
日用化工品 >>
化妆品 |
| 发布部门： | 中国轻工总会 |
| 发布日期： | 1997-12-04 |
| 实施日期： | 1998-08-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 中国轻工总会质量标准部 |
| 归口单位： | 全国化妆品标准化中心 |
| 起草单位： | 上海市日用化学工业研究所 |
| 起草人： | 费介、林燕 |
| 出版社： | 中国轻工业出版社 |
| 出版日期： | 1998-08-01 |
| 页数： | 2页 |
适用范围
本标准规定了化妆品中紫外线吸收剂的定性测定方法。
本标准适用于化妆品中紫外线吸收剂的定性测定。
本标准不适用于化妆品中非紫外线吸收剂的定性测定。
本方法的最低检测浓度为1.5 ×10ˉ6
前言
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目录
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引用标准
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所属分类： 轻工 文化与生活用品 日用化工品 化妆品
Product Code:SAE J1996
Title:Internal Combustion Engines--Piston Rings--Quality Requirements (Cancelled Jun 2008)
Issuing Committee:Piston And Ring Standards Committee
Scope: This SAE Standard specifies the quality aspects that are capable of definition but not normally found on a drawing specification. The difficulty of trying to define in absolute terms the quality attainable in normal commercial manufacture of piston rings is well known. In this document the commonly encountered aspects of quality in terms of casting defects and other departures from ideal are quantified. Many minor defects are clearly quite acceptable; other defects because of size or numbers are inadmissible. This document covers the following: a) Single piece piston rings of grey, carbidic, malleable, spheroidal graphite cast iron or steel; b) Multipiece pistong rings (oil control rings) consisting of cast iron parts and spring components; c) Single piece and multipiece rings of steel, i.e., oil control rings in the form of strip steel components or steel segments (rails) with spring expander components. In addition to specifying certain limits fo acceptance relating to inspection measuring principles (covered by SAE J1589) this document also covers those features for which no recognized quantitative measurement procedures exist and which are only checked visually with normal eyesight and without magnification. Such features (superficial defects) are additional to the standard tolerances of ring width, radial wall thickness, and closed gap. The requirements of this document apply to all rings up to and including 200 mm diameter covered by the above classification for both reciprocating internal combustion engines and compressors.
