[Cytometry] Question about FACSAria daily shutdown solution

Marie Follo marie.follo at uniklinik-freiburg.de
Mon Jan 16 03:51:26 EST 2012

Hi Steffen,

Thanks for bringing this topic up. 

My institute has started recommending that people switch over from 
using 70% Ethanol to 60% Isopropanol for general disinfection 
purposes. I don't know of any inherent disadvantages to using the 
Isopropanol on machine components, but would love to hear from anyone 
if there are any.

The advantage of this would be that it gets you away from the problem 
of having to choose between having the additives present in the 
Ethanol vs. the high cost of Ethanol without the additives. I haven't 
tried the Isopropanol yet, but was seriously considering the switch 
for exactly those reasons.

Best Regards,

Marie Follo

Am 12 Jan 2012 um 20:58 hat Schmitt, Steffen geschrieben:

> Dear colleagues,
> Happy new year to everybody and interesting discussions on this list!
> What I am interested in is, which shut down solutions you use for
> routinous daily shut down of the cell sorters FACSAria.
> We have 3 of them - all at least at Aria IIu level.
> We use 80% Ethanol (which originally contains 1% Petrolether) in
> deionised water.
> After now more than 1,5 years of running these machines (2-3 sorts per
> day on each instrument), we faced significantly reduced FSC/ SSC
> signals at all 3 instruments at once. On one instrument we could see
> mouse bone marrow only with logarithmic amplification of FSC/ SSC -
> doublet discrimination wasn´t possible at all.
> Cleaning the cuvette with FACSClean, FACSRinse and Ethanol didn´t help
> much. At the end with Neodisher (a more acidic cleaning solution) we
> were able to get back to acceptable scatter signals.
> After discussions with the company the focus lies now on the
> petrolether in our shut down solution.
> Now I want to hear your experiences, problems and solutions.
> Thank you all for your replies.
> Best
> Steffen 
> -- 
> Dr. Steffen Schmitt
> Head of the Flow Cytometry Unit
> German Cancer Research Centre
> (Deutsches Krebsforschungszentrum in der Helmholtz-Gemeinschaft,
> Stiftung des öffentlichen Rechts)
> Microscopy Core Facility; Flow Cytometry Unit;
> KST: W220
> Im Neuenheimer Feld 280
> D-69120 Heidelberg
> Phone:  +49-(0)6221-42-1261 (office)
>         +49-(0)6221-42-3640
>         +49-(0)6221-42-3643 (lab)
>         +49-(0)6221-42-3740
> Fax:    +49-(0)6221-42-3755
> E-Mail: steffen.schmitt at dkfz-heidelberg.de
> Web: www.dkfz.de/en/facs/index.html
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Marie Follo, Ph.D.
Core Facility
Abt. Innere Medizin I
Zentrale Klinische Forschung
Breisacherstr. 66
Universitaetsklinik Freiburg
79106 Freiburg
Tel.: +49 761 270 63770
e-mail: marie.follo at uniklinik-freiburg.de

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