UNE-EN ISO 5398-3:2019 Leather - Chemical determination of chromic oxide content - Part 3: Quantification by atomic absorption spectrometry (ISO 5398-3:2018)
2019UNE-EN ISO 5398-3:2019 Leather - Chemical determination of chromic oxide content - Part 3: Quantification by atomic absorption spectrometry (ISO 5398-3:2018)
2008UNE-EN ISO 5398-3:2008 Leather - Chemical determination of chromic oxide content - Part 3: Quantification by atomic absorption spectrometry (ISO 5398-3:2007)