steralization

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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Sepals
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Post by Sepals » Sun Aug 13, 2006 4:57 pm

mkwaje wrote:For blood serum, they usually use filtration or an inspissator. For books and shoes, use of radiation is probably the best.
Ethanol would be far more safer and easier and would be just as effective.
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canalon
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Post by canalon » Sun Aug 13, 2006 6:51 pm

Nope ethanol is not a real good disinfectant, even at 70% (best concentration), it tends to evaporate too fast.
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Sepals
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Post by Sepals » Mon Aug 28, 2006 3:50 pm

I use it at work. I clean gilsons and the surfaces of the hood with it after they become contaminated and it works every time.
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mkwaje
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Post by mkwaje » Mon Sep 04, 2006 2:06 am

Sepals wrote:
mkwaje wrote:For blood serum, they usually use filtration or an inspissator. For books and shoes, use of radiation is probably the best.
Ethanol would be far more safer and easier and would be just as effective.


Nope... Ehtanol is a disinfectant, not a sterilizing agent. A lot of mold spores and bacterial spores can survive ethanol treatment. Ethanol is not even the best alcohol disinfectant, isopropyl is even better but it will in no way sterilize shoes! And I really hate to think what would happen to a book if you use ethanol or on blood serum!!! Your going to wipe the book cover and the pages with alcohol and you won't have anything to read afterwards. At least radiation have some penetrating power and can probably sterilize those stuff without much affecting its functional properties.[/b]

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mkwaje
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Post by mkwaje » Mon Sep 04, 2006 2:11 am

Canalon wrote:Nope ethanol is not a real good disinfectant, even at 70% (best concentration), it tends to evaporate too fast.


I agree with Canalon, 70% is the best concentration. Too small and the alcohol properties won't affect cells too much. Too high, and it would evaporate too fast resulting to very little contact time with the organisms. But of course, if you apply 70% alcohol in your hands, don't be fooled if you think your hands are 100% microbe free!

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