RARE EARTH ELEMENT (REE) GLASS STANDARDS FOR WDS

Product Code REE6G

These REE standards consist of a set of six Si-Al-Ca based glasses. Four of the glasses contain either three or four of the 14 REEs, (one glass also contains Yttrium as it is often found in association with the REEs), each REE and Yttrium being present at a concentration of 4 wt%. The REE elements assigned to each glass is such that minimum X-ray peak overlap is encountered. A fifth glass contains all the REEs at 0.5 wt% concentration. The sixth glass is REE free and is used as a zero standard. Typical area of each glass after polishing approximately 3mm square.

RARE EARTH ELEMENT (REE) GLASS STANDARDS FOR EDS and WDS

Product Code REE16G

A standard set consisting of sixteen Si-Al-Ca based glasses. Fourteen of the glasses each containing a single REE oxide at 12 wt%, additionally a glass containing Yttrium oxide at 12wt% is included as it is often found in association with the REEs, one of the glasses is REE free and is for use as a zero standard.

All the above glasses can be supplied as a set or supplied individually in customer specified standard blocks. These glass standards have all been chemically analysed in duplicate and the glasses are issued with a certificate of analysis from a certified laboratory. They have all been tested for homogeneity by EPMA. These glasses have been developed to replace the fluorides and pure metals traditionally used as standards for REE analysis. REE glasses have the advantage of providing a standard which is easily polished, free from surface oxidation and generally lowers the amplitude of the analysis ZAF correction.