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May 2006

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Wed, 17 May 2006 09:24:21 -0400
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We use the volume marks on the side of the funnel and turn the vacuum on
after the sample has been added to the funnel.  The results are reported as
CFU/100mL.




                                                                           
             David Jones                                                   
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I would like to elicit the help of the PMF group to clarify an internal
discussion! When sampling 100-200mL of sample e.g. water, into a
disposable filter funnel for filtration do you use the volume marks
printed on the funnel side to determine volume or pre-measure the sample
volume in a separate container. If the former do you have a spec for
volume as >100mL or something else. Secondly when preparing the sample,
is the filtration manifold vacuum turned on while pouring the sample
into the funnel or is the volume poured then the vacuum applied to pull
the sample through?"

Thanks for your input,



David Jones

Genomic Profiling Systems




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The PMFList (http://microbiol.org/PMFList_info.htm) is operated from
The Microbiology Network (http://microbiol.org) and supported by
our sponsors (http://microbiol.org/sponsor.htm) as a service to
the scientific community.

Please take a second to visit our sponsors' web sites and say thank you for their support of this service.

Accugenix - http://www.accugenix.com

American Type Culture Collection - http://www.atcc.org

ATS Laboratories - http://www.ats-labs.com

Biolog - http://www.biolog.com

Biomerieux - http://industry.biomerieux-usa.com

Dupont Qualicon - http://www.qualicon.com

EMD Chemicals - http://www.emdchemicals.com

EMSL Analytical, Inc. - http://www.emsl.com

Genomic Profiling Systems, Inc. - http://www.genprosys.com

MIDI, Inc. - http://www.midi-inc.com

Millipore - http://www.millipore.com

Pall - http://www.pall.com

NovaTek International - http://www.ntint.com

Raven Biological Labs - http://www.ravenlabs.com

Veltek Associates, Inc - http://www.sterile.com

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The nature of this service is to provide a medium for communication.  The specific statements and endorsements of individuals participating in the discussions are not necessarily those of The Microbiology Network, Inc., the PMF, or the sponsors of the list.

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