Malvern Mastersizer 3000 User Manual

Introducing the Mastersizer 3000 Chapter 2
Mastersizer 3000 Page 2-7
Dry dispersion
A dry system comprises of the main optical unit plus the Aero S dispersion unit.
The Aero S is designed for providing an even circulation of dry powder throughout
Mastersizer measurement cell.
Direct software control over the feed rate and air pressure is provided, which ena-
bles flexible control of both the sample throughput and dispersion. The unit can be
controlled either independently of measurement or from within a manual/SOP
measurement. The following illustration shows a typical dry dispersion unit instal
-
lation:
ill 8652
The Aero S dry dispersion unit is only compatible with the Mastersizer 3000
optical unit.

Optical unit

Vacuum unit

Dry dispersion unit

Ancillary switching unit

Dry cell

Computer running the Master-
sizer application software (not
shown)
12 3 4 5

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