XP ENV 955-4

<p>ISO 21587-1:2007 specifies reagents, dissolution and gravimetric silica analysis for the chemical analysis of aluminosilicate refractory products and raw materials. </p> <p>ISO 21587-1:2007 gives alternatives to the X-ray fluorescence (XRF) method given in ISO 12677:2003.</p>

<p>ISO 12677-3:2007 specifies inductively coupled plasma/atomic emission (ICP/AE) spectrometry and flame atomic absorption (FAA) spectrometry methods for the chemical analysis of aluminosilicate refractory products and raw materials. </p> <p>The methods are applicable to the determination of the following:</p> <ul><li>silicon(IV) oxide (SiO₂)</li><li>aluminium oxide (Al₂O₃)</li><li>iron(III) oxide (total iron oxide calculated as Fe₂O₃)</li><li>titanium(IV) oxide (TiO₂)</li><li>manganese(II) oxide (MnO)</li><li>calcium oxide (CaO)</li><li>magnesium oxide (MgO)</li><li>sodium oxide (Na₂O)</li><li>potassium oxide (K₂O)</li><li>chromium(III) oxide (Cr₂O₃)</li><li>zirconium oxide (ZrO₂)</li><li>phosphorous(V) oxide (P₂O₅)</li></ul> <p>This part of ISO 12677 gives alternatives to the X-ray flluorescence (XRF) method given in ISO 12677:2003</p>

<p>ISO 26845:2008 specifies apparatus, reagents, sampling, sample preparation, terms and definitions, basic procedures, loss on ignition and reporting of results applicable to the following standards, which are used for the chemical analysis of refractory products and raw materials by wet chemical, AAS and ICP-AES:</p> <p>ISO 10058-1, ISO 10058-2 and ISO 10058-3;</p> <p>ISO 20565-1, ISO 20565-2 and ISO 20565-3;</p> <p>ISO 21079-1, ISO 21079-2 and ISO 21079-3;</p> <p>ISO 21587-1, ISO 21587-2 and ISO 21587-3.</p>