IEC 62321-7-1:2015
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Determination of certain substances in electrotechnical products - Part 7-1: Hexavalent chromium - Presence of hexavalent chromium (Cr(VI)) in colourless and coloured corrosion-protected coatings on metals by the colorimetric method
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16-09-2015
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IEC 62321-7-1:2015 describes a boiling water extraction procedure intended to provide a qualitative determination of the presence of hexavalent chromium (Cr(VI)) in colourless and coloured corrosion-protection coatings on metallic samples. In this procedure, when Cr(VI) in a sample is detected below the 0,10 g;cm2 LOQ (limit of quantification), the sample is considered to be negative for Cr(VI). Since Cr(VI) may not be uniformly distributed in the coating even within the same sample batch, a ;grey zone; between 0,10 g;cm2 and 0,13 g;cm2 has been established as ;inconclusive; to reduce inconsistent results due to unavoidable coating variations. In this case, additional testing may be necessary to confirm the presence of Cr(VI). When Cr(VI) is detected above 0,13 g;cm2, the sample is considered to be positive for the presence of Cr(VI) in the coating layer.
It has the status of a horizontal standard in accordance with IEC Guide 108.
| Committee |
TC 111
|
| DocumentType |
Standard
|
| ISBN |
978-2-8322-2895-1
|
| Pages |
37
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN 62321-7-1 : 2016 | Identical |
| I.S. EN 62321-7-1:2015 | Identical |
| EN 62321-7-1:2015 | Identical |
| SN EN 62321-7-1:2015 | Identical |
| BS EN 62321-7-1:2015 | Identical |
| PNE-FprEN 62321-7-1 | Identical |
| UNE-EN 62321-7-1:2015 | Identical |
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