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WillSolvem
Odd-Hand




Registered: 04/24/12
Posts: 1,519
Loc: Chapter 26
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Sterilization Pressure/Temperature & Duration Table
#19342794 - 12/29/13 05:56 PM (10 years, 1 month ago) |
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Couldn't find one when I first started. 
Instructions: Find your optimum operating pressure/temperature follow the row until the intersecting line and read the suggested time at the bottom of that column. Example 15psi = 90min

I hope this helps, feel free to copy
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HypnotoadCroaked
Retired, but will check MSGs

Registered: 01/05/13
Posts: 1,168
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Re: Sterilization Pressure/Temperature & Duration Table [Re: WillSolvem]
#19342847 - 12/29/13 06:06 PM (10 years, 1 month ago) |
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So 10 partially filled quart jars will take 20 minutes @ 20 psi? Seems awfully short
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WillSolvem
Odd-Hand




Registered: 04/24/12
Posts: 1,519
Loc: Chapter 26
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Re: Sterilization Pressure/Temperature & Duration Table [Re: HypnotoadCroaked]
#19342870 - 12/29/13 06:10 PM (10 years, 1 month ago) |
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Quote:
Whippy said: So 10 partially filled quart jars will take 20 minutes @ 20 psi? Seems awfully short
I thought the same thing until I tested it with sterilization strips. Takes time to get to 20psi. Higher pressures requires increased heat applied. Plus it doesn't cool immediately, after 30 minutes after discontinuing heat it was still at 10psi
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AMU Q&A Thread because questions deserve answers.
Edited by WillSolvem (12/29/13 06:15 PM)
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HypnotoadCroaked
Retired, but will check MSGs

Registered: 01/05/13
Posts: 1,168
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Re: Sterilization Pressure/Temperature & Duration Table [Re: WillSolvem]
#19342889 - 12/29/13 06:14 PM (10 years, 1 month ago) |
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Quote:
WillSolvem said: I thought the same thing until I tested it with sterilization strips. Takes time to get to 20psi. Higher pressures need increased heat applied. Plus it doesn't cool immediately, after 30 minutes after discontinuing heat it was still at 10psi
On a side note, your modded PC scares me.
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WillSolvem
Odd-Hand




Registered: 04/24/12
Posts: 1,519
Loc: Chapter 26
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Re: Sterilization Pressure/Temperature & Duration Table [Re: HypnotoadCroaked]
#19342918 - 12/29/13 06:18 PM (10 years, 1 month ago) |
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Quote:
Whippy said:
Quote:
WillSolvem said: I thought the same thing until I tested it with sterilization strips. Takes time to get to 20psi. Higher pressures need increased heat applied. Plus it doesn't cool immediately, after 30 minutes after discontinuing heat it was still at 10psi
On a side note, your modded PC scares me.
Lmao, check that thread I TRIED to induce failure a couple weeks ago, interesting results, almost shit myself I was so nervous:
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AMU Q&A Thread because questions deserve answers.
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HypnotoadCroaked
Retired, but will check MSGs

Registered: 01/05/13
Posts: 1,168
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Re: Sterilization Pressure/Temperature & Duration Table [Re: WillSolvem]
#19343115 - 12/29/13 07:11 PM (10 years, 1 month ago) |
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Quote:
WillSolvem said: Lmao, check that thread I TRIED to induce failure a couple weeks ago, interesting results, almost shit myself I was so nervous:

I highly advise against this sort of thing. You are flirting with disaster in a way that I doubt that you truly understand. A sudden discharge of that sort of force does all sorts of things....Flying metal lids...concussive blasts that can rupture eardrums etc (death included). Totally irresponsible imho. If you need higher than 15 psi, please get a proper pressure vessel for this.
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Pastywhyte
Say hello to my little friend



Registered: 09/15/12
Posts: 37,811
Loc: Canada
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Re: Sterilization Pressure/Temperature & Duration Table [Re: WillSolvem]
#19343138 - 12/29/13 07:18 PM (10 years, 1 month ago) |
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Quote:
WillSolvem said:
Quote:
Whippy said: So 10 partially filled quart jars will take 20 minutes @ 20 psi? Seems awfully short
I thought the same thing until I tested it with sterilization strips. Takes time to get to 20psi. Higher pressures requires increased heat applied. Plus it doesn't cool immediately, after 30 minutes after discontinuing heat it was still at 10psi

While your modded PC also scares the piss outta me, I find this quite interesting as well, since I use an AA 75x and sterilize at 20 psi often.
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cronicr



Registered: 08/07/11
Posts: 61,436
Loc: Van Isle
Last seen: 2 years, 1 month
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Re: Sterilization Pressure/Temperature & Duration Table [Re: Pastywhyte]
#19343140 - 12/29/13 07:19 PM (10 years, 1 month ago) |
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i just ordered the same model AA
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  It doesn't matter what i think of you...all that matters is clean spawn I'm tired do me a favor
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Pastywhyte
Say hello to my little friend



Registered: 09/15/12
Posts: 37,811
Loc: Canada
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Re: Sterilization Pressure/Temperature & Duration Table [Re: cronicr]
#19343160 - 12/29/13 07:26 PM (10 years, 1 month ago) |
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 You gonna love it
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Gr13nMushDude
Stranger


Registered: 05/25/13
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Last seen: 1 year, 8 months
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Re: Sterilization Pressure/Temperature & Duration Table [Re: Pastywhyte]
#19343791 - 12/29/13 09:48 PM (10 years, 1 month ago) |
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I wish people would stop bashing will over this your not at risk and he warns over it so if you dont like it dont do it end of story just like every other tek ...
also WillSolvem you got any ideas on bumping up my psi I've got a Philippe Richard 8-Quart Pressure Cooker, Aluminum its at 15psi but obviously i want to go higher better to killem all lol maybe 18-19 psi?
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HypnotoadCroaked
Retired, but will check MSGs

Registered: 01/05/13
Posts: 1,168
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Re: Sterilization Pressure/Temperature & Duration Table [Re: Gr13nMushDude]
#19344015 - 12/29/13 10:39 PM (10 years, 1 month ago) |
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Quote:
Gr13nMushDude said: Aluminum its at 15psi but obviously i want to go higher better to killem all lol maybe 18-19 psi?
Cheap PCs that are "rated" at 15 psi WILL FAIL eventually if operated outside of the intended use. You need to really understand that at times it will present a life/death catastrophe. You obviously do not understand/respect pressurized steam, and TBH if you want to know how to void a warranty and possibly kill yourself, do it in pm. There are plenty of impressionable people who may think this is a sane plan, but I hate to be a debbie-downer, but just because Will has not blown himself up yet does not make this anything like a reasonable plan.
Do it in pm, because discussions of this nature CERTAINLY HAVE NO PLACE HERE. This type of tek has no place here. Mark my words, if enough people here on this site modify their PC to operate outside of specs SOMEONE will eventually die or worse....and they will have no recourse because they modified a pressure vessel without any understanding of what the consequences are.....Not to mention what any impending investigation may find....You may quickly find out that you would be getting medical treatment from the state penitentiary. Police tend to close in on noises that sound explosive pretty quick.
I work with HPS (High pressure steam) every day at coal, gas and nuke power plants. If you do not respect it, it will kill and others you quickly. 15 psi is childs play, but still certainly has potential to kill. Its like comparing a 30-06 to a .22.
Sounds to me you should simply stick with a crock pot and pf tek. I think the responsibility of owning a PC is too much for you.
TL:DR
15 psi is great for "killem all". I cannot fathom why anyone would risk disaster by modding a cheap chinese pc for 5 extra PSI. Quit being cheap and dangerous to yourself and others, and fork over the funds to get a cooker that will do 20psi safe. Otherwise you are a total fool.
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cronicr



Registered: 08/07/11
Posts: 61,436
Loc: Van Isle
Last seen: 2 years, 1 month
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Re: Sterilization Pressure/Temperature & Duration Table [Re: HypnotoadCroaked]
#19344030 - 12/29/13 10:43 PM (10 years, 1 month ago) |
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yeah thats one thing with the old school heavy duty steel pc's but anybody fucking with the cheap aluminum has balls i could never aquire, cool chart though will
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  It doesn't matter what i think of you...all that matters is clean spawn I'm tired do me a favor
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bodhisatta 
Smurf real estate agent



Registered: 04/30/13
Posts: 61,890
Loc: Milky way
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Re: Sterilization Pressure/Temperature & Duration Table [Re: HypnotoadCroaked]
#19344039 - 12/29/13 10:46 PM (10 years, 1 month ago) |
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There's no real reason to go over 15 PSI, especially in vessels made for 15psi, except to try as an attempt to make up for flaws elsewhere in cultivation attempts.
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cronicr



Registered: 08/07/11
Posts: 61,436
Loc: Van Isle
Last seen: 2 years, 1 month
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Re: Sterilization Pressure/Temperature & Duration Table [Re: bodhisatta]
#19344052 - 12/29/13 10:49 PM (10 years, 1 month ago) |
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i love 20 psi for supplimented wood blocks
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  It doesn't matter what i think of you...all that matters is clean spawn I'm tired do me a favor
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bodhisatta 
Smurf real estate agent



Registered: 04/30/13
Posts: 61,890
Loc: Milky way
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Re: Sterilization Pressure/Temperature & Duration Table [Re: cronicr]
#19344056 - 12/29/13 10:50 PM (10 years, 1 month ago) |
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Quote:
cronicr said: i love 20 psi for supplimented wood blocks
Yea but you have an AA right? not a aluminum bomb with a rubber gasket.
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WillSolvem
Odd-Hand




Registered: 04/24/12
Posts: 1,519
Loc: Chapter 26
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Re: Sterilization Pressure/Temperature & Duration Table [Re: Gr13nMushDude]
#19344060 - 12/29/13 10:52 PM (10 years, 1 month ago) |
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Quote:
Gr13nMushDude said: I wish people would stop bashing will over this your not at risk and he warns over it so if you dont like it dont do it end of story just like every other tek ...
also WillSolvem you got any ideas on bumping up my psi I've got a Philippe Richard 8-Quart Pressure Cooker, Aluminum its at 15psi but obviously i want to go higher better to killem all lol maybe 18-19 psi?
Thanks but I don't mind the bashing, people have the right to their opinion and although I might not agree with it I'll defend to death their right to express it, so.. 
Without a gauge to read pressure even I might be reluctant to modify. Aluminum is soft though so drilling a hole and bolting a pressure gauge would be really easy, you could then add weight to the rocker weight. The rockers are steel and magnets stick pretty well or you could glue large metal washers until desired pressure is reached.
As stated above though, higher than 15psi isn't necessary, I opt for it when cycling wood based spawn or plugs or I'm shooting for more than four cycles in a single day for each autoclave (i actually have two of these both modded) and rely on shorter cycle times
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AMU Q&A Thread because questions deserve answers.
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bodhisatta 
Smurf real estate agent



Registered: 04/30/13
Posts: 61,890
Loc: Milky way
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Re: Sterilization Pressure/Temperature & Duration Table [Re: bodhisatta]
#19344075 - 12/29/13 10:56 PM (10 years, 1 month ago) |
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Aluminum also will fail with time unlike steel which can undergo unlimited stresses below a tensile threshold.
You can stress steel infinitely many times as long as it's within a range of acceptable stress, The ranges of acceptable stress for aluminum exists to get long life, but you cant do the stresses infinitely many times you'll see failure eventually.
There's a debate on bicycles that makes it easier to visualize. like here.
Aluminum acts very differently, it's behavior in terms of ultimate tensile strength compared to steel are severe when talking about using it as a mission critical part that shouldn't be failing with 20 psi of nearly 300F steam.
Edited by Trusted cuItivator (12/29/13 10:57 PM)
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WillSolvem
Odd-Hand




Registered: 04/24/12
Posts: 1,519
Loc: Chapter 26
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Re: Sterilization Pressure/Temperature & Duration Table [Re: bodhisatta]
#19344089 - 12/29/13 10:59 PM (10 years, 1 month ago) |
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Please consider your opinion inexplicably expressed bodhisatta
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HypnotoadCroaked
Retired, but will check MSGs

Registered: 01/05/13
Posts: 1,168
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Re: Sterilization Pressure/Temperature & Duration Table [Re: bodhisatta]
#19344123 - 12/29/13 11:10 PM (10 years, 1 month ago) |
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Same failure that will happen when something goes wrong with the modded pc. Look at that kitchen....looks like a pork-bomb went off. Now imagine being in the kitchen when the cooker was apparently bouncing off the walls. I want nothing to do with any 250f heavy metal object expelling steam and flying around my kitchen.
Another member with Phillipe Richards 8qt pc
User indicated that afformentioned 8qt pc operates at 11 psi. Modding it to 15 psi would be a disaster, let alone 20. It may work a few times or more, but after looking up that model...Its a POS and should be ran at the intended pressure.
Great chart, Sorry to have taken it OT. Some things are serious enough to me that I believe they need to be pointed out and stressed upon. I really feel that most people do not have the common sense and respect for steam.
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WillSolvem
Odd-Hand




Registered: 04/24/12
Posts: 1,519
Loc: Chapter 26
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Re: Sterilization Pressure/Temperature & Duration Table [Re: HypnotoadCroaked]
#19344221 - 12/29/13 11:33 PM (10 years, 1 month ago) |
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Yea I've seen the video before. Fully loaded my autoclave weighs ~ 28lbs not 4lbs. And the blowout plug did it's job. Like I said rubber not aluminum will fail first.
Either way please feel free to post your thoughts on my Tek under the Tek thread where your opinion would have the greatest impact on those considering the modification, let's stick to the topic here please  
Here's the link, see y'all there: http://www.shroomery.org/forums/showflat.php/Number/17000445
Here's to a happy New year's eve you guys
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AMU Q&A Thread because questions deserve answers.
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