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OfflineSHA2
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how should sterilize petri dishes?
    #5561792 - 04/27/06 06:06 AM (17 years, 9 months ago)

Hey guyz,
I have bought some petri dishes and wanna use them for agar. but dunno how to sterilize the dishes... They are made from plastic so PCing them isnt a good idea.

Wut you suggest?


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InvisibleFractalXplora
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Re: how should sterilize petri dishes? [Re: SHA2]
    #5561939 - 04/27/06 08:22 AM (17 years, 9 months ago)

dude, my magic dragon just starting usung agar and plastic dishes, what he did was to get em in the glove box, and wipe down with 90% alchol and let em dry then pour., no problem, all is contam free!I belive they are meant to come steralized in packs, but u cant b to careful eh!GL....ps...agar not as hard as it sounds, just go for it and b sterile ok>:)


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Offlinehomusubi
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Re: how should sterilize petri dishes? [Re: FractalXplora]
    #5562217 - 04/27/06 09:52 AM (17 years, 9 months ago)

i think cleaning with alcohol is a good idea...
but! if you still want a other method, you can but a UV lamp, and let the petri dishes exposed to it... it will also help to clan your work place at the same time...

UV needs about 4 hour to be effective, and u UV radiation is bad for you, so you don't have to expose to it...


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Offlinewiggles
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Re: how should sterilize petri dishes? [Re: homusubi]
    #5562228 - 04/27/06 09:56 AM (17 years, 9 months ago)

Where can you get a germicidal UV lamp? Thats not really the sort of thing they keep at walmart or home depot is it?

I'd think if it was more people would be using it :wink:


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You can turn your back on a person, but never turn your back on a drug, especially when its waving a razor sharp hunting knife in your eye.
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Offlinehomusubi
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Re: how should sterilize petri dishes? [Re: wiggles]
    #5562243 - 04/27/06 10:03 AM (17 years, 9 months ago)

humm... you can buy it in a lab store... in Chile you can but it there, maybe there are more restrictive in your country... i cost +/- US$ 50


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"Entonces, mientras camines por esta tierra, Tu y tus hijos abrazar?is las Tinieblas, beber?is s?lo sangre, comer?is s?lo cenizas, ser?is como fuisteis en el momento de morir, nunca muriendo, siempre viviendo. Caminar?is para siempre en las Tinieblas, todo cuanto toqu?is se desmoronar?, hasta los ?ltimos d?as".


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OfflineRogerRabbitM
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Re: how should sterilize petri dishes? [Re: FractalXplora]
    #5562312 - 04/27/06 10:26 AM (17 years, 9 months ago)

The petri dishes are sterile when you open the bag. Anything you do to 'clean' them will only make them dirty.
RR


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Offlinewiggles
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Re: how should sterilize petri dishes? [Re: RogerRabbit]
    #5562331 - 04/27/06 10:32 AM (17 years, 9 months ago)

I'm actually interested in this because a friend of a friend borrowed some petri dishes from work to let me start using agar. However, years of use in the bio lab, I highly doubt they're still sterile.

I was planning on just boiling them in a bleach solution, then reboiling in distilled water to get any bleach residue off. Don't have a pressure cooker quite yet sine I'm saving up for an all american without a seal (my mother was almost killed by a pressure cooker when the seal went, so she has banned them from her house).


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You can turn your back on a person, but never turn your back on a drug, especially when its waving a razor sharp hunting knife in your eye.
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OfflineSHA2
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Re: how should sterilize petri dishes? [Re: wiggles]
    #5562508 - 04/27/06 11:38 AM (17 years, 9 months ago)

thanks for all the info.
I bought them of ebay! came in a bag and sounded to be sterilized. But I have left the bag open for 5 6 days now so cant risk it!

Yeah uv wouldn't help much as its hard to find it! PCing them is wrong too cause I did it and they were melted!

The reason I am asking this question is I have seen some pics on this site that some ppl put the normal vermiculate and rye substrate in the petri dishes and I was wondering how they sterilized them.

I think Ill do alcohol but thats crap taht I have to make a glove box!


Have a friend in hospital so i may ask him;)


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Offlinehomusubi
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Re: how should sterilize petri dishes? [Re: SHA2]
    #5562758 - 04/27/06 12:58 PM (17 years, 9 months ago)

Quote:

RogerRabbit said:
The petri dishes are sterile when you open the bag. Anything you do to 'clean' them will only make them dirty.
RR




not all petri dishes come sterilized... and if u want to re-use them, u still need to clean them up...


--------------------
"Entonces, mientras camines por esta tierra, Tu y tus hijos abrazar?is las Tinieblas, beber?is s?lo sangre, comer?is s?lo cenizas, ser?is como fuisteis en el momento de morir, nunca muriendo, siempre viviendo. Caminar?is para siempre en las Tinieblas, todo cuanto toqu?is se desmoronar?, hasta los ?ltimos d?as".


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