"Bill Bell" <wbell1@bellsouth.net> wrote in message
news:9EoOa.2735$ye4.6355@sccrnsc01...[color=blue]
> Interesting discussion...which lead me to wonder: As sanitizers, can
> Iodophor, TSP, and bleach go on killing microorganisms indefinitely, like[/color]
a[color=blue]
> catalyst that can effect a change without itself being changed? Or does
> their killing power diminish, the more microorganisms they kill?
>
> Bill
>[/color]

Idophor evaporates (at least the iodine component does). Some of the others
do as well. Some are neutralized over time. All are ineffective given some
duration exposed to oxygen.

Tom Veldhouse