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<p>This document specifies methods for the determination of</p>
<p>— the presence of colourless chromate conversion coatings,</p>
<p>— the presence of hexavalent chromium in colourless and coloured coatings on zinc or cadmium or aluminium-zinc (mass fraction of aluminium: 55 %, within a range of 54 % to 56 % mass fraction) and zinc-aluminium (mass fraction of aluminium: 5 %) alloys,</p>
<p>— the total chromium content per unit area on zinc and cadmium,</p>
<p>— the mass per unit area of both colourless and coloured coatings,</p>
<p>— the satisfactory adhesion of chromate conversion coatings, and</p>
<p>— the quality of chromate coatings.</p>
<p>These methods are applicable to</p>
<p>— colourless and coloured chromate conversion coatings containing trivalent and hexavalent chromium in varying proportions and produced by either chemical or electrochemical processes, and</p>
<p>— chromate coatings that are free from any supplementary coatings, such as oil, water or solvent-based polymers or wax.</p>
Reģistrācijas numurs (WIID)
78211
Darbības sfēra
<p>This document specifies methods for the determination of</p>
<p>— the presence of colourless chromate conversion coatings,</p>
<p>— the presence of hexavalent chromium in colourless and coloured coatings on zinc or cadmium or aluminium-zinc (mass fraction of aluminium: 55 %, within a range of 54 % to 56 % mass fraction) and zinc-aluminium (mass fraction of aluminium: 5 %) alloys,</p>
<p>— the total chromium content per unit area on zinc and cadmium,</p>
<p>— the mass per unit area of both colourless and coloured coatings,</p>
<p>— the satisfactory adhesion of chromate conversion coatings, and</p>
<p>— the quality of chromate coatings.</p>
<p>These methods are applicable to</p>
<p>— colourless and coloured chromate conversion coatings containing trivalent and hexavalent chromium in varying proportions and produced by either chemical or electrochemical processes, and</p>
<p>— chromate coatings that are free from any supplementary coatings, such as oil, water or solvent-based polymers or wax.</p>
