Introduction
The Accessory has been manufactured from materials that are considered to give
the widest protection from chemical attack. However, it is important to check that
any sample or dispersant you may use is chemically compatible with the materials
that they will come into contact within the Accessory.
This appendix lists all materials that come into contact with the sample and
dispersant in the normal operation of the Accessory.
Components in contact with
sample and dispersant
The following materials are in contact with the sample and dispersant:
Component Material
Cell and Dispersion Unit body Stainless steel
Cell windows Glass
Window and cell seals Viton (Kalrez available as an option)
Sample tubing Tygon
Drain seal PTFE and Kalrez (optional)
Highly flammable and volatile solvents such as Methanol, Ethanol, Acetone and
Benzene may be used in the Dispersion Unit with care. It should, however, be
noted that the Dispersion Unit contains a brushed DC motor which is not vapour
protected.
Methyl Ethyl Ketone may be used in the Dispersion Unit but the sample tubing
should be replace with silicone tubing and with prolonged exposure the Viton
“O” rings in the flow cell should be replaced with, for example, Kalrez seals.
For advice on chemical compatibility contact your Malvern representative.
APPENDIX B
QS SMALL VOLUME SAMPLE DISPERSION UNIT
Page B.1
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