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Offlinefelixopolus
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contaminated sterilized casing mix?
    #14149244 - 03/19/11 04:09 PM (12 years, 10 months ago)

So i pressure cooked few jars full of casing mix and used them up to case FC trays, but the last jar was half used, i wonder if i contaminated it by opening it and the placing the remaining half jar in the fridge? should i pressure cook it again before top dressing the tray (after harvesting crop)?

I'm worried that the mix is no longer good, don't wanna introduce bacteria and fuck up the entire tray..

please advice


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InvisibleDoc_T
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Re: contaminated sterilized casing mix? [Re: felixopolus]
    #14149250 - 03/19/11 04:10 PM (12 years, 10 months ago)

Are you talking about spawning to bulk substrate? Or are you casing something?


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Offlinefelixopolus
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Re: contaminated sterilized casing mix? [Re: Doc_T]
    #14149277 - 03/19/11 04:16 PM (12 years, 10 months ago)

i pressure cooked a casing mix of peat moss + verm + ground egg shells + crushed oyster shells which i used to layer below and above mycelium slices - here:




but half jar is questionable because it's been opened, i didn't stick my unwashed fingers in there or anything, the spoon i used was washed with simple green but i still wonder if the kitchen air contaminated it?


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Invisiblem00nshine
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Re: contaminated sterilized casing mix? [Re: felixopolus]
    #14149406 - 03/19/11 04:52 PM (12 years, 10 months ago)

If you're pressure cooking it, the temp is too high.

Pasteurization temps fall between 140 - 160 F

I think PCing at 15 PSI produces 250 F Temps. I could be wrong, but it's around there.


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Invisiblejokefox
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Re: contaminated sterilized casing mix? [Re: m00nshine]
    #14149548 - 03/19/11 05:21 PM (12 years, 10 months ago)

what ever a pc does its way to high

thats why its getting contamed is cause you sterilized it


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Offlinefelixopolus
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Re: contaminated sterilized casing mix? [Re: m00nshine]
    #14158810 - 03/21/11 11:16 AM (12 years, 10 months ago)

how is it wrong if my mushrooms are growing in this mix?


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Offlinefelixopolus
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Re: contaminated sterilized casing mix? [Re: jokefox]
    #14158814 - 03/21/11 11:17 AM (12 years, 10 months ago)

all i want to know if whether people re-sterilize their mixes after openning or not? is it necessary? and why?


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