Bulk Substrate - Steam Sterilization

Deebs

The Sentient Naturewalker
Staff member
Administrator
Moderator
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Deebs

The Sentient Naturewalker
Staff member
Administrator
Moderator
I thought this was neat, I saw something today that really made me wonder. Thought it was a cool idea so posting it here..

One large heavy duty tote, real thick one, not like monotub style...drill small hole for candy thermometer in the middle, set as far as it can go, and add gasket putty, and let cure. In one corner insert high temp tubing about 4 inches, and apply gasket putty and cure. Other end of your tubing gets clamped on your pressure cooker nipple....small rack was inserted into the tote...when the lid went on the candy thermometer went through the bag into substrate....then boil water watch temp etc adjust as necessary.

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Storage Bin:

High Temp Tube:
Amazon product

Rack:

Thermometer:

Pressure Cooker:
Amazon product
 

macsnax

Pollen Slinger
I thought this was neat, I saw something today that really made me wonder. Thought it was a cool idea so posting it here..

One large heavy duty tote, real thick one, not like monotub style...drill small hole for candy thermometer in the middle, set as far as it can go, and add gasket putty, and let cure. In one corner insert high temp tubing about 4 inches, and apply gasket putty and cure. Other end of your tubing gets clamped on your pressure cooker nipple....small rack was inserted into the tote...when the lid went on the candy thermometer went through the bag into substrate....then boil water watch temp etc adjust as necessary.

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Storage Bin:

High Temp Tube:
Amazon product

Rack:

Thermometer:

Pressure Cooker:
Amazon product

That's a nice build
 

jpcyan2

In Bloom
Pretty cool idea. I've seen similar using a styrofoam cooler. The only problem for me is the efficiency.
How long did he say this would take? Seems like you would be running the PC for hrs and hrs on your stove, just to produce enough steam to thoroughly heat the substrate and keep it there for at least an hr or two. Probably have to add water multiple times to the PC, effectively cooling it off and restarting the process..
Another issue would be penetration , depending on how dense the substrate is. How is the steam penetrating the bag?
There are much easier ways to achieve this. Even making multiple smaller runs using other simple methods seems more efficient.
It is neat, but might be overkill, to achieve a simple pasteurization. Even for bulk.
All the components are handy to have, but I think there are much easier ways than this method/setup.

@macsnax - A much cheaper and simple way to test the ph for subs/soil etc, is the Hydrion strips. You might not get pin point accuracy, but then you really dont need that. This ain't hydro :D
There are 100 strips per bottle, each can be cut down to really small pieces and using tweezers you can just touch the moist surface and read the ph according to the chart on the bottle. A couple bottles have lasted me for close to 10 yrs.

Red Litmus Paper
 

Deebs

The Sentient Naturewalker
Staff member
Administrator
Moderator
Pretty cool idea. I've seen similar using a styrofoam cooler. The only problem for me is the efficiency.
How long did he say this would take? Seems like you would be running the PC for hrs and hrs on your stove, just to produce enough steam to thoroughly heat the substrate and keep it there for at least an hr or two. Probably have to add water multiple times to the PC, effectively cooling it off and restarting the process..
Another issue would be penetration , depending on how dense the substrate is. How is the steam penetrating the bag?
There are much easier ways to achieve this. Even making multiple smaller runs using other simple methods seems more efficient.
It is neat, but might be overkill, to achieve a simple pasteurization. Even for bulk.
All the components are handy to have, but I think there are much easier ways than this method/setup.

I thought it was neat, and I had some of the same questions that you have also. I um got *denied* the use of the oven for anything *dirt like* in a turkey bag...ive been warned lol
So my ears are wide open :) hehe....I am also just reading and researching as I wait for syringes...im freakin antsy here...I want to see a spawn bag colonizing already...
 

macsnax

Pollen Slinger
Pretty cool idea. I've seen similar using a styrofoam cooler. The only problem for me is the efficiency.
How long did he say this would take? Seems like you would be running the PC for hrs and hrs on your stove, just to produce enough steam to thoroughly heat the substrate and keep it there for at least an hr or two. Probably have to add water multiple times to the PC, effectively cooling it off and restarting the process..
Another issue would be penetration , depending on how dense the substrate is. How is the steam penetrating the bag?
There are much easier ways to achieve this. Even making multiple smaller runs using other simple methods seems more efficient.
It is neat, but might be overkill, to achieve a simple pasteurization. Even for bulk.
All the components are handy to have, but I think there are much easier ways than this method/setup.

@macsnax - A much cheaper and simple way to test the ph for subs/soil etc, is the Hydrion strips. You might not get pin point accuracy, but then you really dont need that. This ain't hydro :D
There are 100 strips per bottle, each can be cut down to really small pieces and using tweezers you can just touch the moist surface and read the ph according to the chart on the bottle. A couple bottles have lasted me for close to 10 yrs.

Red Litmus Paper
That's easy enough, I'll have some ordered up in a bit
 

jpcyan2

In Bloom
Denied! ahahah Yup, been there myself. This whole covid thing has put a halt to my access to the kitchen/ stove/oven. With the wife home all the time, aint no cooking of dung going on. She is really not a fan.

The outdoor propane turkey fryer or a the used crockpot/slowcooker from a resale shop are always options ..hmmmm. ;)
 

Deebs

The Sentient Naturewalker
Staff member
Administrator
Moderator
Is there an upper limit? Like, will tooo hot be counter productive?
I am imagining a marshmallow roasting/illegal charcoal production, family activity.
Too hot and you kill the bio activity you need.
 

Dino Party

💩🔥 💩🔥 💩🔥
Okay I’m inspired again gonna give it another go. Making a SAB this weekend to do it a lil more serious, will inoculate an agar plate with a spore syringe. Last plates fizzled out, maybe I can store them better this time to set
 
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