John Gentile wrote:
> Before we lost our TB lab we used to clean all surfaces with 10% bleach
> (0.5% final conc.) It did stain the stainless steel after many years of
> cleaning. Our hood was always left running with the UV light on when not in
> use, and we cleaned the UV bulb on a weekly basis.
>> Why do you state that the 1% bleach is not effective against mycobacteria?
> I'm not sure that any living bacteria can survive against bleach.
Looking for alternatives for lyorthol I dived into the literature. That's why.
For surface cleaning we have our usual 70% ethanol. The lyorthol we used for
disposal of contaminated pipettes etc. inside the safetyhood. The supplier of the
safety-hood warns against high (5%) concentrations of chlorine. To be honest I have
forgotten where the damage would occur. But a safety hood has to be safe.
Loes
