European Standard Updates Method for Wear and Corrosion in Nickel Release
March 2007 (07B-110)
EN 12472: 2005, Method for the Simulation of Wear and Corrosion for the Detection of Nickel Release from Coated Items, was published in the Official Journal of the European Union (OJEU) C60 of 15 March 2007. This standard replaces the 1998 version and must be used to check compliance with the European Parliament and Council Directive 94/27/EC of 30 June 1994 amending for the 12th time Directive 76/769/EEC on the approximation of the laws, regulations and administrative provisions of the Member States relating to restrictions on the marketing and use of certain dangerous substances and preparations.
The primary change to the standard is the wear procedure. The updated standard specifies a method for accelerated wear and corrosion to be used prior to the detection of nickel release from coated items that come into direct and prolonged contact with the skin.
Background: In order to show compliance with Directive 94/27/EC, metallic items such as earrings; necklaces; bracelets and chains; wrist-watch cases; watch straps; etc. should be tested in accordance with the appropriate European harmonized standard(s), EN 1811 and EN1 2472 published by the European Commission.
Difference in Wear Procedure Between 2005 and 1998 Versions: The barrel is rotated so as to subject the test pieces to wear from the wear medium. The following table summarizes the main differences between the obsolete and the new versions.
|
2005 version |
1998 version |
| Type of container |
The tumbling barrel with retaining assembly |
Simple cylindrical plastic container |
| Wear test apparatus |
A device allowing reversed rotation at a constant 30 rotations per minute |
A device rotating at 12 m/ min at its circumference |
| Abrasive media |
Granules consist of outer shell of coconuts, walnuts, peanuts and almonds |
Abrasive chips of cylindrical shape, cut at 45° at each extremity, made of sintered corundum |
| Wear medium |
Granules mixed with abrasive paste made of ester wax, stearic acid, petroleum distillates, polyethylene glycol cetyl/oleyl ether, silicon dioxide and de-ionized water |
Abrasive chips and a lubricant of 0.1% aqueous solution of 20% sodium lauryl sulfate solution |
| Wear period |
Rotate the tumbling barrel at 30 rotations per minute for a total of 5 h, the direction of the rotation reverse after 2.5 h |
Run the wear apparatus at 12 m/min speed for a total of 4 h |
How Bureau Veritas Consumer Products Services Can Assist You
With experienced technical professionals worldwide, we can assist companies testing for nickel wear corrosion to this new standard. We also provide comprehensive quality assurance services for the consumer product and retail markets, offering a comprehensive range of services including testing, inspections, consulting, training, outsourcing, and auditing.
For more information: Please contact your client service representative or:
Asia: samuel.wong@hk.bureauveritas.com; christopher.tam@hk.bureauveritas
Europe: joerg.ruhkamp@de.bureauveritas.com; manfred.mayer@de.bureauveritas.com
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