Jewellery and precious metals. Determination of high purity silver. Difference method using ICP-OES1 Scope This document specifies the analytical procedure for the determination of silver with a nominal content of and above 999 (parts per thousand). This document specifies a method intended to be used as the recommended method for the determination of silver of fineness of and above 999 . For the determination of fineness of and above 999,9 , modifications described in Annex B apply.

where production is stable (under statistical control) and the quality characteristic x has a known standard deviation and is distributed according to a normal distribution or a close approximation to the normal distribution

The range of applicability of each method is indicated in Figure 1

By using these guidelines

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This Technical Specification provides a test method for evaluating potency of silver nanoparticles to cell wall degradation of Staphylococcus aureus and muramic acid release as quantified by a gas chromatography-mass spectrometry (GC-MS)

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Facilitate the implementation of key principles with clear direction and leadership

950 | ISO/IEC 13235-1 and those in this Specification