DIN EN ISO 14719:2012 Chemical analysis of refractory material glass and glazes - Determination of Fe<(hoch)2+> and Fe<(hoch)3+> by the spectral photometric method with 1,10-phenanthroline (ISO 14719:2011); German version EN ISO 14719:2011 has been changed from DIN 51087-1:2005 Testing of oxidic raw and finished materials - Part 1: Spectrophotometric determination of iron(II) and iron(III) using o-phenanthroline.
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