Chapter 4 Making measurements
Page 4-34 MAN 0474
Blue measure-
ment duration(s)
(Wet dispersion
units only)
Blue light measurement is more effective when measuring
particles under approximately 1μm in size. There is a gradual
reduction in the effectiveness (and hence significance to the
overall measurement result) of the use of blue light on sam-
ples containing particles above this size.
Some red and yellow samples (such as pigments) can
absorb light in the blue spectrum. This may lead to problems
with the validity of the data acquired during the blue light
part of the measurement. If you have such a sample, the blue
light measurement can be disabled, so limiting the measure-
ment to the main red laser.
Either select Use the durations I specify, or If no blue light
measurement is required, select Don't perform blue light
measurement. This will speed up the measurement time.
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