Jeni
Apologies. A quick test with a small magnet suggests that the
block is probably aluminium. However there must be something
pre-column that's causing these rust particles. Whatever it is
may be the root of your problem also. You could try tracing the
problem back by inserting pre-filters at various places in the
system, such as at the autosampler and pump outlets. The peek
frit-type filters have minimal dead volumes and so shouldn't
affect system performance too much;-)!
Regards, JG.
**********************************
Dr J. Gray
University of Newcastle Upon Tyne
Molecular Biology Unit
3rd Floor Cookson Building
Framlington Place
Newcastle NE2 4HH
United Kingdom.
Tel. / FAX : +44 (0) 191 222 8612
Email : joe.gray@newcastle.ac.uk
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