Lora -
One way to cause rapid nozzle corrosion is by improper use of the stream
centering adjustment. Be sure your jet is hitting the aspirator where you
want it before you turn the plates on, then turn the plates on and
use the centering
adjustment to steer it back to that place, if necessary. If you
are using the centering adjustment to steer the jet away from its
normal (no plate voltage) trajectory, then
you are essentially running a steady electrical current through the
nozzle all the
time - a good way to corrode it.
- Dick
>Hello to all,
>
>Since November 2001, I have needed the Macrosort Head on my FACSVantage SE
>replaced 4 times because of corrosion. I am wondering if anyone else has
>ever needed a Macrosort Head replaced due to a green-black deposit that pits
>the metal of the head. My Vantage SE runs all day long 8-5, at 28 PSI and a
>DDF of 51236. I have been using FACSFlow (azide free) as sheath. I use
>only 70% ETOH, distilled water, and FACSFlow through the sample line. My
>collegue uses this combination as well as bleach.
>
>If anyone has insight on this one, I would appreciate a reply.
>
>Thanks,
>
>Lora W. Barsky, Research Specialist
--
Richard Stovel stovel@stanford.edu
This archive was generated by hypermail 2b29 : Sun Jan 05 2003 - 19:26:18 EST