ml/min into mm/s

Doug Caldwell caldwell at skyway.usask.ca
Fri Aug 7 19:28:34 EST 1998


Sarah,

Divide the flow rate in cm^3/min by the cross sectional area of your flow
cell in cm^2 and you'll have the laminar flow velocity in cm/min
(flow/cross sectional area = laminar flow velocity).  Just be sure to keep
space and time in the same units throughout your calculation.

Best Wishes - Doug Caldwell





>Dear biofilmers
>
>could anyone provide me with an equation for converting ml/min into
>mm/s; when using a peristalsic pump and a flow cell.
>
>All literature seems to quote 0.2mm/sec as a usual speed, but I am
>uncertain as to how they arrive at this figure when pump speeds are in
>rpm and flow rates are in ml/min.
>
>Surely 0.2mm/s could be highly variable depending on the tube radius?
>
>Help
>
>Sarah Boyle
>Research School of Biosciences
>University of Kent
>CT2 7NJ
>
>01227 764000 ext. 3023
>
>
>
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*********************************************************
Doug Caldwell
Microbial Colonization Laboratory
Department of Applied Microbiology and Food Science
51 Campus Drive, University of Saskatchewan
Saskatoon, Saskatchewan, S7N 5A8, Canada
Voice: (306) 966-5026 (office), -5042 (colonization lab), -7704 (laser
imaging facility), 934-0711 (home)
Fax:  306-966-8898
Email:  caldwell at sask.usask.ca
**********************************************************




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