Malvern Mastersizer 3000 User Manual

Mastersizer 3000 Page 6-1
6
Sample preparation
guidance
Introduction
Preparation of the sample before it is added to the system can be critical. Over half
the problems encountered when measuring a sample are caused by poor sample
preparation. If the sample is sticking together, dissolving or floating on the surface,
or if it is not a representative sample, the result will be incorrect.
There are many techniques available to ensure that the sample is prepared success-
fully. Once a suitable dispersion technique is found for the sample, standardise the
procedure (using an SOP) so that comparisons can be made between samples.
This chapter gives information on:
 Sample preparation flow chart – summarises the process.
 Representative sampling.
 Considerations for dry samples.
 Considerations for wet samples.
 Symptoms of poor sample preparation.

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