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PhytoExtractum Shop: Maeng Da Thai Kratom Leaf Powder

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Offline3777777
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Black spots on my agar
    #26898094 - 08/25/20 04:10 AM (3 years, 5 months ago)

Can anybody tell me what these black bits are on my agar.
I heat my scalpel with a blowtorch then cut a clean piece from a good plate and transfer it using the scalpel and place it upside down on the new plate in my SAB. This is the first time I have seen these black dots around the transferred piece.
Thanks



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InvisibleChRnZN
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Registered: 12/21/08
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Re: Black spots on my agar [Re: 3777777]
    #26898148 - 08/25/20 05:23 AM (3 years, 5 months ago)

Possibly Aspergillus niger, depending on how it develops. Hydrogen Peroxide can kill some of it. Did you take transfers from the edge of your previous plates? It looks like the mold came from that area.


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Offline3777777
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Re: Black spots on my agar [Re: ChRnZN]
    #26898168 - 08/25/20 05:49 AM (3 years, 5 months ago)

Those bits with the black have rounded edges so they must have been from the edge of the plate. Will do the next lot of transfers from the inside further. Thanks


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PhytoExtractum Shop: Maeng Da Thai Kratom Leaf Powder


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