Page 20 - EDX-7200

Sample Preparation

Solid Samples
• Large samples (> 13 mm dia.) • Small samples (< 13 mm dia.)

Cover the bottom of the cell Cover with lm. Cover the measuring
with lm and add the sample. window with lm and place
Simply mount in the instrument. the sample on it.

Pretreatment of metal samples
To enhance the quantitation precision for metal
samples or to eliminate the effects of
contamination or oxidation on the sample
surface, machine and polish the sample surface
Machined and polished sample Lathe
with a lathe and rotary polishing machine.

Liquid Samples
• Measurement in atmosphere or with helium purging • Measurement in a vacuum

If a small volume of sample results in inadequate thickness
(depth), use a Micro X-Cell.
(This also applies to powder samples.)
Cover the bottom of the cell Perform measurements on
with lm and add the sample. sample dripped onto special
lter paper and dried.

Powder Samples

Flat press heads

Cover the bottom of the cell Press form the powder with a Press machine
with film and add the sample press machine
(loose powder method). (briquette press method).
Pulverizing Samples Glass Bead Method
Pulverize samples with coarse particle sizes, The glass bead method provides highly
or samples subject to effects of accurate analysis of oxide powders, such as
non-uniformity of mineral particles on the rock. The sample is glassified using a flux
analysis surface. Pulverizing such as Li2B4O7.
container
Automatic Pulverizer

EDX-7200
20 Energy Dispersive X-Ray Fluorescence Spectrometer