Chapter 5
Maintenance
Page 5-16
MAN 0494
Note
Rinse inlet filters have a working life of approximately one year. Contact
Malvern Instruments to order replacement parts.
Replacing the needle
When to replace the needle
The needle will need to be replaced periodically when it can no longer be cleaned
sufficiently. Additionally, the needle can be replaced to suit the kind of plate that is
currently being used. The piercing needle (included) is more suited to piercing the
membrane used to cover some plates, whereas a flat-tipped needle (included) could
be more effective in plates with flat well bases filled with a very low sample volume.
Removing and replacing the needle
1.
Remove the lid from the Zetasizer APS instrument.
2.
Completely loosen the existing needle in its holder using a 2.5mm allen key in
the securing bolt
.
3.
Carefully withdraw the needle
from the holder.
ill 8586
B
C
A
MAN0494-1 (Zetasizer APS Basic Guide).book Page 16 Friday, August 9, 2013 2:08 PM