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 SAMPLES
 Customers
tell us about samples (eg. material, name etc.) when they enquire
but we do not understand
exactly
what the samples are like. From this reason, we find out the following
information.
<For pellet samples>
 A sample must
be able to be tested in water or other liquid medium
 If not, the
sample can't be tested by 300&200 series.
How
many digits the customers need for measuring density (management)
Customers can
choose from 3 model types. It depends on their industry standard
or their usage.
eg.)For
plastic industry, we recommend the model SD-200L in Japan because
the standard requires 4 digits.
For
rubber factory, the model EW-300SG or the model MD-300S is recommendable
in Japan.
How
big the sample is
(D)100 X (W)70
X (H)25mm
Weight,
density value
Weight should
be within 300g.
A minimum weight
for each model is required for testing. If the weight of the sample
is less than the
minimum
weight for a model, the testing result will include an error.
In case the sample
doesn't meet the minimum weight for testing, plural samples can
be prepared for the test.
Plural samples
will bring accurate test result in such a case.
If not, an error
will occur.
Floating,
soluble, or absorbable in the water or not
eg.)For
testing a floating sample like a sponge or a film, you can measure
it by using STEEL ANGLE or
a low tension
surface liquid medium like ethanol. There are various testing
methods for our densimeters and it depends
on the
kind of samples.
 STEEL ANGLE
is a standard accessory for our densimeter 300&200 series(PAT.pending).
<For pellet samples>
Basically, ask
the same questions as above
Can
be tested in ethanol or not
In case where
the density of the sample is lower than water and higher than
ethanol, it is easier to test
by using
ethanol as a liquid medium instead of water.
<For liquid samples> (Mixture)
Is it mixed equally?
Has it been precipitated gradually as time passes?
If YES, the
measured density value would be based on the liquid samples around
the glass sample.(therefore
not an
average of the liquid sample) The value should be used as a standard
only.
Is
it high viscosity liquid or not?
A glass sample
which weighs about over 20g should be sunk in the liquid without
pressure.
The test
will be impossible if viscosity is too high and the G.S. doesn't
sink into the liquid.
(eg.
mayonnaise can't be tested.)
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