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InvisibleJ. Jack Flash
stranger than ever.

Registered: 11/20/13
Posts: 1,500
Re: Cultivation General Discussion [Re: natedawgnow]
    #26258308 - 10/17/19 11:21 AM (4 years, 3 months ago)

that link is great. thanks, my people.

natedawg, i believe you're correct, assuming the rocker/ventpipe system is working as designed. obviously adding weight, like taping quarters to the rocker, changes this, which would be the easiest way to increase the pressure inside.


--------------------
 
the j stands for jesus.
2020 new years grow along


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InvisibleAyePlusS
Stony Danza
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Registered: 12/18/14
Posts: 3,393
Loc: Fairfield, Connecticut
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Re: Cultivation General Discussion [Re: J. Jack Flash] * 1
    #26258343 - 10/17/19 11:34 AM (4 years, 3 months ago)

The thing you guys are missing is the rocker and the gauge measure pressure inside the cooker against the pressure outside the cooker, if there is leas pressure outside the rocker or gauge then the gauge will read higher/rocker will rock sooner, or vice vera.


--------------------
Learn about breeding

C10’s agar guide
Good surface conditions = Good pinsets
Read more, post less.
🅂 🄰 🄼 🄴  🅃 🄴 🄰 🄼
🅃 🄴 🄰 🄼  🄲 🄻 🄸 🄽 🄶 🅆 🅁 🄰 🄿


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OfflinecronicrFacebook
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Registered: 08/07/11
Posts: 61,436
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Last seen: 2 years, 9 days
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Re: Cultivation General Discussion [Re: AyePlus]
    #26258372 - 10/17/19 11:44 AM (4 years, 3 months ago)

:whathesaid: it's not the pressure it's the temp


--------------------

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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InvisibleTedsDead
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Registered: 01/03/17
Posts: 4,998
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Re: Cultivation General Discussion [Re: cronicr]
    #26258375 - 10/17/19 11:46 AM (4 years, 3 months ago)

yeah, it states that clearly in the link


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396


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OfflinecronicrFacebook
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Re: Cultivation General Discussion [Re: TedsDead]
    #26258376 - 10/17/19 11:47 AM (4 years, 3 months ago)

Fuck links that's so 2010 ...i got Google home bitches


--------------------

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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Offlinefootpath
ὕδωρχοίρος

Registered: 07/16/19
Posts: 1,367
Last seen: 1 year, 2 months
Re: Cultivation General Discussion [Re: AyePlus] * 1
    #26258379 - 10/17/19 11:49 AM (4 years, 3 months ago)

https://www.gopresto.com/uploads/downloads/instructions/01781.pdf

Quote:

Altitude - Pressure - Processing Time
2,001–4,000 ft. - 12 pounds - increase processing time 5 min
4,001-6,000 ft. - 13 pounds - increase processing time 10 min
6,001-8,000 ft. - 14 pounds - increase processing time 15 min







https://www.manualslib.com/manual/1316075/All-American-75x.html?page=2#manual

Quote:

At altitudes greater than sea level, settings need to be adequately adjusted to compensate for the effect of altitude on the boiling point of water. We suggest you increase pressure by 0.5psi for every 1000 ft. of elevation above sea level.

City Altitude - Steam Pressure Required
Sea level -15-17 psi
2000ft - 16-18 psi
4000ft - 17-19 psi
6000ft - 18-20 psi
8000ft - 19-21 psi
10,000ft - 20-22 psi




Y'all gotta read the literature provided with your tools.


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InvisibleTedsDead
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Registered: 01/03/17
Posts: 4,998
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Re: Cultivation General Discussion [Re: footpath] * 1
    #26258479 - 10/17/19 12:31 PM (4 years, 3 months ago)

if links arer soo 2010 I dont even know what reading the manual is considered:facepalm3:


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396


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OfflineAlwaysAtHeight
Grain Dancer

Registered: 09/12/19
Posts: 65
Last seen: 9 months, 21 days
Re: Cultivation General Discussion [Re: footpath]
    #26258486 - 10/17/19 12:36 PM (4 years, 3 months ago)

So FWIW I'm new to this and have only run half a dozen bag runs but I have a shitty 300 year old presto and I just put all my bags in the mesh laundry bag I use for pasteurizing straw and tie it tight. Also I don't mess with the PC until it strait cooled down. Also Stamets recommends 4hours for bags but I've been lucky at 2 but I've only inoculated with lots of grain so they've colonized rather quickly.


--------------------
The trick is in what one emphasizes. We either make ourselves miserable, or we make ourselves happy. The amount of work is the same.

-Carlos Castaneda


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OfflinecronicrFacebook
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Posts: 61,436
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Re: Cultivation General Discussion [Re: AlwaysAtHeight]
    #26258489 - 10/17/19 12:38 PM (4 years, 3 months ago)

If u have spacers between your bags there is no reason to go four hours


--------------------

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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Invisiblechipsandwich
I'm a teapot


Registered: 04/25/16
Posts: 943
Loc: Flag
Re: Cultivation General Discussion [Re: footpath]
    #26258492 - 10/17/19 12:39 PM (4 years, 3 months ago)

I like the idea of having a separate dish/jar of agar solely for cooling, thanks guys.

Is there any other use for a sleeve of compromised petris other than the bin?


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InvisibleJ. Jack Flash
stranger than ever.

Registered: 11/20/13
Posts: 1,500
Re: Cultivation General Discussion [Re: AyePlus]
    #26258503 - 10/17/19 12:46 PM (4 years, 3 months ago)

Quote:

AyePlus said:
The thing you guys are missing is the rocker and the gauge measure pressure inside the cooker against the pressure outside the cooker, if there is leas pressure outside the rocker or gauge then the gauge will read higher/rocker will rock sooner, or vice vera.




i don't think so. the gauge reads how much higher the pressure is inside the cooker than outside. if atmospheric pressure doubled, say by moving the cooker to the bottom of a very deep hole, heating the cooker up, the rocker will still rock when the pressure inside the cooker is 15psi higher than the pressure at the bottom of the hole, because the design is such that the weight over the cross sectional area of the vent equals 15psi. it's not a function of atmospheric pressure. the temperature inside would be a lot higher, because the absolute pressure would be a lot higher, but the gauge would still read 15psi.


--------------------
 
the j stands for jesus.
2020 new years grow along


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OfflinecronicrFacebook
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Re: Cultivation General Discussion [Re: chipsandwich] * 1
    #26258560 - 10/17/19 01:11 PM (4 years, 3 months ago)

Quote:

chipsandwich said:
I like the idea of having a separate dish/jar of agar solely for cooling, thanks guys.

Is there any other use for a sleeve of compromised petris other than the bin?



Can make little windows in your sab:lol:


--------------------

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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InvisibleAyePlusS
Stony Danza
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Registered: 12/18/14
Posts: 3,393
Loc: Fairfield, Connecticut
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Re: Cultivation General Discussion [Re: J. Jack Flash]
    #26258572 - 10/17/19 01:14 PM (4 years, 3 months ago)

You basically just rephrased what I said. We fully agree, but lets unpack it a little further;

The gauge/rocker are affected the difference in pressure.

For our purposes we are assuming a certain pressure = a certain temp, at which a certain amount of time needed for sterilization.


If you change the pressure the gauge changes, but the temp we need doesnt, so using a higher/lower  relative pressure(which is all the gauge/rocker measure) might be needed depending on whether you’re on top of a mountain or under the sea. Luckliky most of us live within a few 1000 miles of the sea level so the rule of thumb works just fine, and for those outside the norm the math is provided by the companies that make the sterilizers

In your hypothetical high pressure scenario water would turn into gas at a higher tempurature, increasing heat without increasing pressure, in this case we would decrease time needed for sterilization, and the rocker would be useless, assuming the gauge was properly calibrated you could plug in the math to use that . On the inverse You can make water boil at room temp under a vacuum.

Sure it would rock and the gauge would go up to 15 but for our purposes that is next to worthless.

It wont sterilize at any amount of psi unless the temp is high enough


We use pressure as a relative measurement simply because its easier than measuring heat, (when using a pressurized heated gas for sterilization) and since the ambient pressure stays relatively uniform with only minor adjustments for elevation.


--------------------
Learn about breeding

C10’s agar guide
Good surface conditions = Good pinsets
Read more, post less.
🅂 🄰 🄼 🄴  🅃 🄴 🄰 🄼
🅃 🄴 🄰 🄼  🄲 🄻 🄸 🄽 🄶 🅆 🅁 🄰 🄿


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InvisibleJ. Jack Flash
stranger than ever.

Registered: 11/20/13
Posts: 1,500
Re: Cultivation General Discussion [Re: AyePlus]
    #26258615 - 10/17/19 01:26 PM (4 years, 3 months ago)

sorry man, you said "if there is leas pressure outside the rocker or gauge then the gauge will read higher/rocker will rock sooner, or vice vera."

i just meant to say, the gauge would read the same regardless of external pressure.

but yes absolutely, temp is what matters, not relative pressure.


--------------------
 
the j stands for jesus.
2020 new years grow along


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OfflineEdmunter
Mr
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Registered: 05/01/13
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Re: Cultivation General Discussion [Re: AyePlus]
    #26258620 - 10/17/19 01:28 PM (4 years, 3 months ago)

After a multi spore first flush who removes all the aborts pins?


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InvisibleAyePlusS
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Registered: 12/18/14
Posts: 3,393
Loc: Fairfield, Connecticut
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Re: Cultivation General Discussion [Re: J. Jack Flash]
    #26258625 - 10/17/19 01:30 PM (4 years, 3 months ago)

The gauge and rocker would absolutely read higher in a low pressure environment thats why times or pressure are increased at higher elevation.


--------------------
Learn about breeding

C10’s agar guide
Good surface conditions = Good pinsets
Read more, post less.
🅂 🄰 🄼 🄴  🅃 🄴 🄰 🄼
🅃 🄴 🄰 🄼  🄲 🄻 🄸 🄽 🄶 🅆 🅁 🄰 🄿


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InvisibleJ. Jack Flash
stranger than ever.

Registered: 11/20/13
Posts: 1,500
Re: Cultivation General Discussion [Re: AyePlus]
    #26258722 - 10/17/19 02:11 PM (4 years, 3 months ago)

well ain't that some shit? thanks for setting me straight.

my new understanding, the pressure gauge reads absolute pressure minus a calibration constant. generally, that constant is P_atm at sea level. it can be calibrated to read zero at whatever elevation it's at. so taking that gauge to depth, the reading would go up.

nevertheless, i maintain that the rocker still rocks when the pressure inside the vessel is the weight of the rocker over the cross sectional area of the vent tube. is this also incorrect?


--------------------
 
the j stands for jesus.
2020 new years grow along


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Offlinefootpath
ὕδωρχοίρος

Registered: 07/16/19
Posts: 1,367
Last seen: 1 year, 2 months
Re: Cultivation General Discussion [Re: TedsDead]
    #26258727 - 10/17/19 02:14 PM (4 years, 3 months ago)

Quote:

TedsDead said:
if links arer soo 2010 I dont even know what reading the manual is considered:facepalm3:




It's funny how many technical redundancies people implement in their daily lives just to arrive at the solution that's written in plain text right in their face. (see: road signs)
Also the brain recollects tactile objects far more readily than flashing lights. So... might explain why no one seems to retain this shit. That and the weed.


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InvisibleFeasoghorm

Registered: 10/24/18
Posts: 4,384
Re: Cultivation General Discussion [Re: footpath]
    #26258734 - 10/17/19 02:15 PM (4 years, 3 months ago)

:eatingout::potleaf::eatingout:


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InvisibleTedsDead
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Registered: 01/03/17
Posts: 4,998
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Re: Cultivation General Discussion [Re: Feasoghorm]
    #26258747 - 10/17/19 02:19 PM (4 years, 3 months ago)

I just always lose the manual after my first read thru.  :facepalm3: oh, yeah... the weed.


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396


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