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.