How fast kills 70% ethanol

Rick Jakober rjakober at perrittlab.com
Mon Oct 6 08:56:26 EST 1997

Check out Disinfection, Sterilization and Preservation, 4th Ed. by Seymour
Block, published by Lea & Febiger, Phila. and London. He has an entire
section on the effects of Ethyl alcohol on microbes. It's a great reference

Rick Jakober
rjakober at perrittlab.com

Karl Roberts <kr1 at PGSTUMAIL.PG.CC.MD.US> wrote in article
<Pine.LNX.3.95.971006074324.3644B-100000 at pgstumail.pg.cc.md.us>...
> Dear Koen,
> 	I am not sure that a few seconds of alcohol contact with a fomite
> is sufficient to disinfect properly.  We commonly use benzalkonium
> chloride (zephiran) in our teaching lab, wipe with a sponge, and simply
> let air dry.  Since you are using E. coli and mycobacteria, I would
> suggest o-cresol (lysol), before and after use of the counter surface. 
> Once again, I would air-dry rather than wipe off quickly with a towel, to
> leave disinfectant residue on the fomite. I hope this helps.
> Karl J. Roberts

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