A&D MS-70 - Application of the Analyzer; A. Measurement samples

-
11 -
A. Measurement samples
1. Measurement methods
N
o. Question Answer
1
Can soybeans and coffee
beans be tested without
processing?
No. Samples like beans should first be crushed in blender o
r
mill because their surface and internal temperatures can be
very different. Crushing decreases sample size and increases
surface area and this results in more even heating and
evaporation.
Note: Crushed samples must be measured quickly because the
increased surface area absorbs the moisture from the air.
2
Can materials like milk or
colloids be tested?
Colloids and liquids with solid particles floating on water such
as milk often have dotted surfaces due to surface tension,
which inhibits internal drying and prevents high-speed drying.
In such cases, absorb the liquid sample with an optional
accessory glass fiber sheet. This improves repeatability and
shortens measurement time by one third to a half. Place the
glass fiber sheet on the sample tray, zero the scale and then
apply the sample.
* AX-MX-32-1 (For liquid samples with high surface tension.
Sold separately. 70 mm dia., 100 sheets)
* AX-MX-32-2 (Same as sheets included with the MS/MX/MF.
78 mm dia., 100 sheets)
3
How should I measure items
such as vegetables, seaweeds
and mushrooms?
A
ll samples must be representative of item as a whole. Fo
r
items that have parts with different moisture rates like as
vegetables and seafood, select or mix parts appropriate fo
r
evaluating the overall water content, while considering the
sample mass.
Viscoelastic materials such as kelp and mushrooms should be
ripped or cut up into smaller sizes and then measured. In such
cases, quickly measure the sample to reduce the effects o
f
moisture exchange with the environment. Furthermore, keep
the heating temperature reasonably low to prevent combustion
of the sample.
■ Application of the analyzer