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STANDARDS FOR EPMA

Rare Earth Element (REE) Glass Standards for WDS

Product Code REEG6

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 also contains yttrium as this element 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. The typical area of each glass after polishing is approximately 4 mm2 .

         
Glass1
Y, Pr, Dy & Er
all at 4 wt%
Glass4
Nd, Tb & Lu all at 4 wt%
Glass2
Ce, Eu, Ho & Tm
all at 4 wt%
Glass5
all the REE at 0.5 wt%
Glass3
La, Sm, Gd & Yb
all at 4 wt%
Glass6
REE free

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 NAMAS certified laboratory. They have all been tested for homogeneity by EPMA.