Maintenance
Chapter 5
Zetasizer APS Basic Guide
Page 5-7
Within the attenuation section:
Set the
top
(attenuator) slider to 0%, by selecting and dragging to the left.
Set the
lower
(laser power) slider to 100%, by selecting and dragging to the
right.
Monitor the count rate in the top graph of the count rate window - the current
count rate will be displayed.
With a clean instrument you should see no correlation and the count rate
should be more or less a straight line with random fluctuations of less than
10kcps. The count rate should be stable and less than 120kcps. For a reasonably
clean system this should be less than 50kcps.
If this is not the case check the connections, the cleanliness of the wash fluid,
and finally repeat the cleaning of the flow cell itself.
MAN0494-1 (Zetasizer APS Basic Guide).book Page 7 Friday, August 9, 2013 2:08 PM
