How to deal with ARIA contamination? akos.szilvasi at
Mon Jan 28 14:55:57 EST 2008

Dear FLOWers,

We have a less than two years old (Special Order - UV equipped) ARIA 
sorter that had an unrelenting sheath fluid contamination problem. The 
recurring mysterious contamination existed from the arrival of the sorter. 
We reported it multiple times. BD replaced a few parts of the fluidics 
system but it kept the bugs out of the sheath only for 4-6 weeks at the 
time. Filter replacements, bleaching the system works only temporarily. 
Our other Aria sorter, an older one, never had any such symptoms. We use 
them in an identical fashion. 

One lab suggested to follow their solution (this is not an isolated 
occurrence - not matter what they say) to fill the distilled water tank 
with 70% ethanol so that the fluidics shut down procedure would fill the 
lines with alcohol. That sounds good but no one could tell if this trick 
has some detrimental effect on any parts of the fluidics system. Have you 
used alcohol over night in the sorter? Did it cause any problem on the 
long run?

Any other solution? BD offers to replace the whole fluidics system for $ 

Best regards,

Akos Szilvasi
NIBRI Core Laboratory Services
USCA, 601-5301
Novartis Institutes for BioMedical
Research, Inc.
100 Technology Square
Cambridge, MA 02139
Phone: +1 617 8717177
Email : akos.szilvasi at



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