Malvern Mastersizer 3000 User Manual

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.
Section/option Description

Malvern Mastersizer 3000 Specifications

General

Measurement principle	Laser diffraction
Blue laser wavelength	470 nm
Sample dispersion options	Wet and dry dispersion
Data acquisition rate	10 kHz
Particle size range	0.01 to 3500 microns
Laser type	He-Ne and solid state
Accuracy	Better than 1%
Repeatability	Better than 0.5%
Technology	Mie and Fraunhofer theories
Sample dispersion units	Hydro MV, Hydro LV, Aero S
Optical model	Mie theory
Power requirements	100-240 V, 50/60 Hz
Detector arrangement	Log-spaced array