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I would think that the issue is not that bacteria will be present. This  
is a bacterial planet, after all; we are full of them, and descendants,  
as well.

The problem, as I think an epidemiologist would point out, is bacteria  
'out of place'. As I understand it, e. coli in your intestines work; in  
your blood stream, they are often lethal to the larger organism.

So if you are suggesting a projection system where the audience will be  
subject to inhaling the fog or ingesting it, or getting it in eyes or  
on skin, you've perhaps started that process taking bacteria from one  
location and introducing them into another, with potentially harmful  
results.

.025¢

-Kevin


On Feb 21, 2006, at 12:33 PM, jason jay stevens wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology  
> Centers
> Incorporated, a worldwide network of science museums and related  
> institutions.
> *********************************************************************** 
> ******
>
>> Using a very strong bleach can actually create a worse
>> problem because a perfectly sterile surface is more likely to allow  
>> the
>> growth of the "bad" bacteria.  Most naturally occurring bacteria
>> actually
>> prevent the growth of the more nasty variety.
>
> Drop that Clorox!!!
> Is there corroboration for this?
> Bleach is used everywhere for disinfection...to assert that it  
> actually promotes the growth of more nefarious germs is revolutionary.
>
> How is bacteria growth tested, anyway?
>
> Those MythBuster fellows on TV tested toothbrushes that they  
> strategically placed all around the house, to determine if putting  
> your toothbrush on the back of the toilet is any worse than, for  
> example, hanging it up next to the medicine cabinet or putting it  
> under a bell jar in the kitchen.  They followed a scheme of using a  
> different toothbrush every time they brushed, and putting it back in  
> the same place.
> At the end of the test period, every single toothbrush tested positive  
> for fecal coliform, including the one under the bell jar.
> I think they implied that they sent the brushes to a lab.
>
> Pleasant thoughts,
> Jason
>
> JasonJayStevens
> [log in to unmask]
> www.potterbelmar.org/spoke
>
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