NF EN ISO 17075

Le présent document spécifie une méthode de détermination de la teneur en chrome VI de cuir après extraction aqueuse dans des conditions définies. La méthode décrite convient pour quantifier, pour le cuir, une teneur en chrome VI supérieure ou égale à 10 mg/kg. En deçà de cette limite, le chrome VI est considéré comme non détectable.

<p>ISO 17075-1:2017 specifies a method for determining chromium(VI) in solutions leached from leather under defined conditions. The method described is suitable to quantify the chromium(VI) content in leathers down to 3 mg/kg.</p> <p>ISO 17075-1:2017 is applicable to all leather types.</p> <p>The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH, extraction time, etc.) are not comparable with the results produced by the procedure described in this document.</p> <p>If a leather sample is tested with both this document and ISO 17075-2, the results obtained with ISO 17075-2 are considered as the reference. The advantage of the method described in ISO 17075-2 is that there are no interferences from the colour of the extract. Nevertheless, interlaboratory trials do not show significant differences (see Annex C) and the results are comparable between both methods.</p>

<p>ISO 17075-2:2017 specifies a method for determining chromium(VI) in solutions leached from leather under defined conditions. The method described is suitable to quantify the chromium(VI) content in leathers down to 3 mg/kg.</p> <p>ISO 17075-2:2017 is applicable to all leather types.</p> <p>The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH, extraction time, etc.) are not comparable with the results produced by the procedure described in this document.</p> <p>If a leather sample is tested with both ISO 17075-1 and this document, the results obtained with this document are considered as the reference. The advantage of the method described in this document is that there are no interferences from the colour of the extract. Nevertheless, interlaboratory trials do not show significant differences (see Annex D) and the results are comparable between both methods.</p>