Contaminant

... The positive catalase probably points toward Bacillus spp. but taking it to species will be tough. Are you sure you aren't working with a contaminant? The tests you've run seem more relevant to an enteric id excercise. no this is my unknown, it may have been contaminatied, but still I ...

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... The positive catalase probably points toward Bacillus spp. but taking it to species will be tough. Are you sure you aren't working with a contaminant? The tests you've run seem more relevant to an enteric id excercise.

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... visualise it on gel, but I geally worry about MALDI result because it shows nothing at 3,2 kDa.. Honestly it barely shows something... I guess any contaminant may interrupt. Probes contain 1 M urea, 20-50 mM Tris, 1- 2 mM CaCl2, 0,1% Tween20, 100 mM NaCl and some imidasole.. Can any of this reagents ...

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... lid. Nice polypropylene. Cheap and good size for mini gels. I have a glass container that has been scrubbed acid washed and kept free of as much contaminant as I can for when I need to prepare my gels for silver staining and protein sequencing.

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that if you pick one typical colony you are likely to pick a good one, but if you scrape a plate where some contaminant might be lurking, you might miss it in the crowd.

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