原文由 jeewah 发表:
可能我们的理解有偏差,但我坚持我的想法。
高关注度物质在授权情况下可以使用,在限制情况下不可以使用,也主要是对用途的授权或限制。比如铅及其化合物,用作颜料时,只授权用在修复艺术品和历史建筑方面,限制用在其他方面。在REACH附件17第16、17条有描述。
如果将此颜料涂在玩具表面,显然超越了限制条款,而我们测试其铅的含量时,显然只是将涂层刮下进行测试,此时,涂层即物品,相对质量比并不针对整个玩具。
您好,您所讲的含量的定义适用于RoHS指令,因为其所指的测试针对的是均质部分。但在REACH法规中规定的物品中SVHC物质0.1%的限量则是以物品的整体进行计算。
下面的内容是从RIP 3.8中摘录出来的,请参考。
5.6 Determination of the concentration of identified SVHC
For each article, it must be determined whether the concentration of the identified SVHC is > 0.1% (w/w) in order to know which information has to be communicated down the supply chain (Article 32(4)). A further continuation of the assessment is needed to find out the obligations under Article 7(2). Methods for obtaining information on the concentrations of SVHC in articles and the use of quantitative chemical analysis have been elaborated in previous chapters of this guidance (see Chapter 2, Sections 5.4.1 and 5.4.2). However, it should be noticed that an article producer should consider the possibility of using mass balance for determining the concentration of SVHC in his articles and also be aware of the possibility of accumulating a SVHC through a process.
This chapter is mainly focussing on how to determine the concentration of a SVHC in an article with different components.
The SVHC may be contained in different concentrations in different components of the same arti-cle, e.g. one concentration in the chassis of a computer and another concentration in the trans-former. The concentration threshold of 0.1% (w/w) refers to the average concentration of the entire article as produced or imported.