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 wutthe4k
Sativa Cyborg
Registered: 06/26/08
Posts: 140
Loc: Third stone from the sun
Last seen: 1 year, 7 months
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 pressure cooker question 
#10293661 - 05/05/09 11:45 PM (4 years, 13 days ago) |
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i have read that when using a pressure cooker to steralize pf jars...it must be set to 15 psi.
the pressure cooker that i have access to surprisingly doesn't have a dial that shows the psi. theres just a little metal thing that goes on the top and it jiggles when boiling. can i still use this to steralize?
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a glimpse of the divine...
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Kymatica
Student of Mycology
Registered: 05/05/09
Posts: 130
Last seen: 3 years, 2 months
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Re: pressure cooker question [Re: wutthe4k]
#10293687 - 05/05/09 11:50 PM (4 years, 13 days ago) |
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Not an expert at this but it sounds like the same kind I have and it has worked just fine. When the metal rocker on top is rocking that is when it has reached 15 PSI or at least that is how mine works. Consult your manual that came with it.
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“If death meant just leaving the stage long enough to change costume and come back as a new character...Would you slow down? Or speed up?” -Chuck Palahniuk
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 Doc_T
Random Dude
Registered: 03/06/09
Posts: 42,395
Loc: Colorado 
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Re: pressure cooker question [Re: wutthe4k]
#10293688 - 05/05/09 11:50 PM (4 years, 13 days ago) |
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Yes.
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You make it all possible. Doesn't it feel good?
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4hodmt
AspiringMycologist
Registered: 04/06/04
Posts: 752
Last seen: 3 years, 4 months
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Re: pressure cooker question [Re: wutthe4k]
#10293701 - 05/05/09 11:53 PM (4 years, 13 days ago) |
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Whe n doing PF style, no need to PC.
That weight though is what sets the pressure. The heavier the weight the higher the pressure. You shouldn't surpass your PC's limit, But you easily can if you want, just add more weight to the rocker on top.
If you have a PC, get grains. I just had a QUART jar colonize in 3 days!!!
I would say dont even put the weight on it, just let them boil at normal boiling temperature. I never had a problem with PFs being sterile.
Seriously though, Rye grain is like 4 bucks at a feed store and it's so simple. If you have the PC it'd be silly not to.
i had 11 out of 12 rye quart jars be almost done colonizing bye ten days. And it took 5 days to germinate the Myc. from multispore.
Check up liquid cultures and Rye and casings.
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890jj
Stranger
Registered: 12/25/08
Posts: 12
Last seen: 3 years, 10 months
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Re: pressure cooker question [Re: 4hodmt]
#10294721 - 05/06/09 02:42 AM (4 years, 13 days ago) |
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same as mine they sparkle like wine
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ShroomWhore
Stranger
Registered: 02/25/09
Posts: 81
Loc: The Land of Oz
Last seen: 2 years, 8 months
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Re: pressure cooker question [Re: 890jj]
#10295175 - 05/06/09 05:32 AM (4 years, 13 days ago) |
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I have a PC that only gets to 8 PSI! I just PC my WBS jars for 2 hours instead of 1.
I made a print myself from some wild shrooms I picked and that caused contam in all my jars but the print I ordered from spores101 has had 100% success.
My last batch of jars I also did while I had a cold and so far no sign of contam after a G2G.
Try to find the PSI then add time as required.
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 veda_sticks
Cultivator
Registered: 07/29/07
Posts: 13,359
Loc: UK 
Last seen: 9 minutes, 35 seconds
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Thats the problem with wilds mushrooms, there covered in contaminants. Its best to work them on agar to get away from the contaminants then use the clean culture to inoculate substrate.
15 psi is recomended, but lower works fine, you just have to cook longer.
at 15 psi pf tek 60 minutes, grian 90 minutes
at 10 psi pf tek 90 minutes, grain 2 hours.
try looking at the weight, its sometimes etched on the weight what pressure it works at. The pressure cooker i had was a prestige tall dome and it could do 5, 10, 15. The weight was in 3 parts and screwed together.
cheap small pressure cookers dont always operate at 15 psi. A few of the tower pressure cookers i have seen (uk) only go to 11.5 psi
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RogerRabbit and Roadkills - Lets Grow Mushrooms - PfTek Here Watch and learn - Buy the DVD
Click Me For Agars Grain LC Tek - Forget normal LC Grain LC is better
So you think PF Cakes suck for pins. THINK AGAIN . Cakes covered in pins that you cant even see the cake!
Please check the dates of posts you are talking information from, im getting tired of constantly correcting people posting old outdated information and UTFSE
[url=For Agars Grain LC Tek - Forget normal LC Grain LC is better]Cick Me[/url] For substrate calculator. Calculate spawn and bulk for any size container or vice versa
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FractalXplora
Grainiack
Registered: 02/11/06
Posts: 2,353
Loc: UK
Last seen: 13 hours, 12 minutes
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ive used a tower 11 psi for ages at normal times 1.30 grain. 1 hour pf tek, no problem with contams. If it was 10 or 8 i would up the time 30 mins yes.
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