Ammonium
Iodide Tablets
Average Weight: 21.4mg
Maximum Variation: ±5%
Composition: 66.6% ammonium iodide, 33.4% starch
Bottle: 5000 tablets
|
 |
The
use of a "release agent" in borate fusion-XRF (25/8/93)
An iodide or bromide can be used to increase the surface tension
of a lithium borate melt. This makes it easier for the melt to
release from the crucible and for the bead to release from the
mould. The addition of gold (generally 5%) to the platinum metal
increases the wettingangle giving effectively the same releasing
effect but not to the same extent.
The ISO standard 9516 recommends:
"4.11
Ammonium iodide (NH4I), laboratory reagent grade.
The ammonium iodide need not be dried, but shall be stored in
a desiccator.
7.1.4 If desired, ammonium iodide (4.44) may be used as a release
agent. If it is used, add no more than 0.03g, prior to fusion.
Notes:
7.
Bromides are used as release agents but, since Br Lalpha interferes
with Al Kalpha, they should not be used in this case."
Request
a FREE sample today, contact sales@aft-fusion.com
now.
