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

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OfflineOverdoseLiving
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Can stacking jars inside a pressure cooker make for less effective sterilisation?
    #13993690 - 02/20/11 01:00 AM (12 years, 11 months ago)

If using a 23 quart PC, is it more effective to only use one or maybe two rows of cans? Does stacking them all the way t the top effect anything negatively? Im not really sure how many jars fit in a 23 quart.. Does anyone have any suggestions on what size and how many to fit in there?


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Invisibleslapphappypill
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: OverdoseLiving]
    #13993799 - 02/20/11 01:30 AM (12 years, 11 months ago)

RR fits as many as he can without blocking the valves. Thats all you need to worry about is that the release valves are clear.


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I have FINALLY written up a couple teks as to how SHP has done things in the past. DISCLAIMER: This is not for the newbie to mycology, and not going to work for everyone! This is simply what works for one person when other teks and methods have failed miserably!
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OfflineOverdoseLiving
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: slapphappypill]
    #13994064 - 02/20/11 02:55 AM (12 years, 11 months ago)

Cool, I dont kno why the fuck I was looking at pre cooked bags and jars. I got my big ole PC ready to rock.. i guess i was just wantin t be assured of sterility, but im thinking Im just gonna do 3 hours in the PC to be safe, and save some money.


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Invisibleslapphappypill
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: OverdoseLiving]
    #13994068 - 02/20/11 02:58 AM (12 years, 11 months ago)

3 hours in the PC wtf? 30-60 mins for brf cakes, 90 mins for grains. You dont need anymore time in the PC than that or you start to dry out your substrate....


--------------------
We think we have freedom, but we're all just mice in a maze....

                   

FYI: I stole all my pix off google! F+ PORN! Here is a shit-ton of porn by yours truly!

I have FINALLY written up a couple teks as to how SHP has done things in the past. DISCLAIMER: This is not for the newbie to mycology, and not going to work for everyone! This is simply what works for one person when other teks and methods have failed miserably!
~~~~~How SHP does their unconventional WBS Prep!! (NO DRY METHOD)~~~~
~~~~~SHP's highly disputed method of doing ALL their work outside of a flow hood or a Still air box!~~~~~
~~~~~Troubles harvesting the side and bottom pins in your mono? Learn how!! Dunking included ;-)~~~~~


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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: slapphappypill]
    #13994074 - 02/20/11 03:01 AM (12 years, 11 months ago)

DOn't leave anything in the PC for 160 minutes. Like SP said you will dry out and over cook you substrate, i.e. your PF cakes.


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Offlineclueless
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: ProfessorPinHead]
    #13994503 - 02/20/11 08:19 AM (12 years, 11 months ago)

180 min in pc no way.


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InvisibleDoc_T
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: slapphappypill]
    #13994551 - 02/20/11 08:34 AM (12 years, 11 months ago)

Quote:

slapphappypill said:
You dont need anymore time in the PC than that or you start to dry out your substrate....




How you going to dry something in an environment saturated with high-pressure steam?

I routinely add 30 mins to PC times for my altitude, with no effects at all.
You could certainly do a few hours if you wanted to (no need though).

RR pressure cooks material for 8+ hours at a time, too.


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OfflineProfessorPinHead
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: Doc_T]
    #13994585 - 02/20/11 08:43 AM (12 years, 11 months ago)

Quote:

Doc_T said:


I routinely add 30 mins to PC times for my altitude, with no effects at all.


RR pressure cooks material for 8+ hours at a time, too.




These are very good points. Good call.


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OfflineRogerRabbitM
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Re: Can stacking jars inside a pressure cooker make for less effective sterilisation? [Re: OverdoseLiving]
    #13994588 - 02/20/11 08:45 AM (12 years, 11 months ago)

You can stack jars in a PC.  What will happen is that it will take much longer for steam to begin venting as you're warming it up.  It will also take longer to come up to pressure because you have so much more material to heat up.  However, once it's fully up to pressure, you can use the same time.  If it's BRF jars, use 1 hour.  If quart jars of grains, use 90 minutes, but you don't start the timer until 15 psi is reached.

It should go without saying that when using jars or spawn bags in a pressure cooker, steam should be able to permeate all the way around each substrate.  In other words, don't put two large spawn bags up against each other or one on top of the other without a spacer which allows steam to penetrate the gap between them.
RR


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


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