Malvern Mastersizer 3000 User Manual

Chapter 5 Viewing measurement results
Page 5-22 MAN 0474
 Refractive Index (Real) – this value relates to the speed of light within the
material, which in turn allows the degree of refraction (light bending) to be
predicted when light passes from one medium to another.
 Absorption Index – an imaginary number that describes the amount of
absorption that takes place as the light enters the particle.
 Density – the density in g/cm
3
. This is used to calculate the Specific Surface
Area (SSA). Users who want to include the SSA as a derived parameter must
complete this field.
The residual shown in the Parameters report indicates how well the calculated
data fitted the measurement data.
Refractive index of medium
This value is needed by the software in order to provide accurate calculations and is
specified within Mie theory.

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