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North Spore Shop: Injection Grain Bag, North Spore Mushroom Grow Kits & Cultivation Supplies

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OfflineSkryllz
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Registered: 03/25/02
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Pressure Cooker
    #1176862 - 12/29/02 09:35 AM (18 years, 11 months ago)

I have a small pressure cooker that only goes up to 10 psi, will this still work for sterilizing grains?


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Offlinesocratesmind
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Registered: 02/22/02
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Re: Pressure Cooker [Re: Skryllz]
    #1176878 - 12/29/02 09:49 AM (18 years, 11 months ago)

Only one way to findout is try. g'luck


--------------------
Prohibition will work great injury to the cause of temperance. It is a species of intemperance within itself, for it goes beyond the bounds of reason in that it attempts to control a man's appetite by legislation, and makes a crime out of things that are not crimes. A Prohibition law strikes a blow at the very principles upon which our government was founded.
- Abraham Lincoln: Speech in the Illinois House of Representatives, Dec 18, 1840.


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Invisiblecheesenoonions
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Registered: 04/02/01
Posts: 584
Re: Pressure Cooker [Re: Skryllz]
    #1176890 - 12/29/02 09:57 AM (18 years, 11 months ago)

You will have to cook longer at 10 PSI. There is a chem equation that will give you the exact time, but I dont know it off hand. If I find it I'll let you know. I say cook it half an hour longer than the teks tell you to IF you are doing PF cakes. If you are doing agar, it gets tricky.


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OfflineSkryllz
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Re: Pressure Cooker [Re: cheesenoonions]
    #1176908 - 12/29/02 10:12 AM (18 years, 11 months ago)

Thanks, I'll just cook for about 30 minutes longer. BTW I'm doing millet.


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OfflineSeussA
Error: divide byzero

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Re: Pressure Cooker [Re: Skryllz]
    #1176934 - 12/29/02 10:30 AM (18 years, 11 months ago)

Pressure and temperature are directly related. At 15psi, a pressure cooker has an internal temperature of around 121C. At 10psi, the internal temperature of the pressure cooker will be lower. At standard pressure, the internal temperature of the pressure cooker will be 100C. Most things will die after a little exposure to 121C. Cooking longer will help, somewhat, but is not a substitute for higher temps. I would probably double the cook time for BRF to around 1.5 hrs... probably longer for whole grains with a presoak if you have problems. As long as you are clean and careful, you should be fine. With longer cook times be careful that you don't boil away all the water... an alternative to longer cook times is to cook twice. Do it once like normal, then let it cool 12-24 hours, then hit it again.


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Just another spore in the wind.


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North Spore Shop: Injection Grain Bag, North Spore Mushroom Grow Kits & Cultivation Supplies


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