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OfflineHafrican
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Registered: 01/31/03
Posts: 105
Loc: SW Azerbaijan
Last seen: 16 years, 7 months
Transferring contaminated agar?
    #6838785 - 04/26/07 09:11 PM (16 years, 9 months ago)

I like a challenge.

i have two horribly contaminated plates. One is a KS from four year old spores, and the second is a CR clone.

Are these even possible to transfer and weed out the competitive molds? I've read of people doing peroxide and bleach dips prior to the transfer (with little and some success respectively). Would it be wiser to transfer from the interior or periphery of the mycelial growth?

I'm willing to go through a bunch of plates if need be.


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OfflineRogerRabbitM
Bans for Pleasure
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Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 21 days
Trusted Cultivator
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Re: Transferring contaminated agar? [Re: Hafrican]
    #6839154 - 04/26/07 10:43 PM (16 years, 9 months ago)

Never transfer molds. If there's any healthy mycelium, transfer a tiny piece of that from the leading edge of growth. A few days later, transfer again before any molds have had a chance to show up. Repeat a few times and you'll have a clean culture, provided there is any mushroom mycelium on the plate. It should also go with out saying to use a glovebox. Never open a contaminated petri dish in front of a flow hood.
RR


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Offlinehyphae
born to grow
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Registered: 12/13/02
Posts: 6,228
Loc: the rain forests
Last seen: 12 years, 8 months
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Re: Transferring contaminated agar? [Re: RogerRabbit]
    #6839914 - 04/27/07 05:54 AM (16 years, 9 months ago)

Quote:

RogerRabbit said:
Never transfer molds. If there's any healthy mycelium, transfer a tiny piece of that from the leading edge of growth. A few days later, transfer again before any molds have had a chance to show up. Repeat a few times and you'll have a clean culture, provided there is any mushroom mycelium on the plate. It should also go with out saying to use a glovebox. Never open a contaminated petri dish in front of a flow hood.
RR



Yes always transfer the myc not the contam.


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"We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"


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