Why 70% EtOH for cleaning?
Jody K. Hirsh
jkh141 at nwu.edu
Fri Jun 9 12:15:40 EST 1995
In article <1995Jun1.191457.1 at cc.newcastle.edu.au>,
mdcabl at cc.newcastle.edu.au says...
>I have a very general question. I was told that 70% EtOH is more effective
>than 95% EtOH for sterlizing and cleaning surfaces. Tradition of course is
>use 70% to wipe hoods etc. I had assumed 70% was used just to cut
>anybody out there tell me why 70% is used? Just curious really.
>Univ. of Newcastle
>mdcabl at cc.newcastle.edu.au
My understanding is related to the previous answers but slightly different.
I thought that you need some water to kill (lyse) spores, otherwise they just
get dehydrated and preserved.
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