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Amazon Shop for: ½ Pint Jars, Pressure Cooker, Wild Bird Seed

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OfflineDeViLgunner
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Registered: 11/19/02
Posts: 11
Last seen: 12 years, 7 months
:Possible to use microwave to sterilize?
    #1070113 - 11/20/02 03:27 PM (14 years, 23 days ago)

Is it possible to use a microwave instead of a pressure cooker to sterlize the substrate?

And would this have negative effects on the resources of the substrate?


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Offlineroomush
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Registered: 11/19/02
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Last seen: 12 years, 6 months
Re: :Possible to use microwave to sterilize? [Re: DeViLgunner]
    #1070153 - 11/20/02 03:35 PM (14 years, 23 days ago)

Speaking as a complete newbie myself, but a newbie who does advanced level physics all i can say is that water would need to be added (in order to generate the steam) and theoretically the steam will get as hot as any steaming (semi-steralizing) meaning that the same quality of sterility could be achieved as steaming, but making sure that the microwave is sterile too.

please correct me if im wrong anyone who has more experience


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InvisibleYidakiMan
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Registered: 09/29/02
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Re: :Possible to use microwave to sterilize? [Re: DeViLgunner]
    #1070198 - 11/20/02 03:46 PM (14 years, 23 days ago)

Most jars that are used to contain substrate have metal lids. This would be problem one to overcome.
Perhaps if you can overcome this problem, you should try it and report your contamination rate back to the group.


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Offlinecookdandbombd
SERENITY NOW!

Registered: 08/31/02
Posts: 148
Loc: Northern Ireland
Last seen: 13 years, 10 months
Re: :Possible to use microwave to sterilize? [Re: DeViLgunner]
    #1070217 - 11/20/02 03:50 PM (14 years, 23 days ago)

When I was looking for PC's on Ebay I noticed a microwave Pressure Cooker which was quite cheap. Anyone had any experience with these? I'm eager to try grains so will probably end up buying a PC at some stage.


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Offlinelvleph
mathematicalidiot

Registered: 11/12/02
Posts: 240
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Re: :Possible to use microwave to sterilize? [Re: cookdandbombd]
    #1070237 - 11/20/02 03:53 PM (14 years, 23 days ago)

Now that I think of it I have one. lol
I forgot
that is funny, and I just bought a new one. I should try that thing out for my birdseed. By the way they are normally pretty small. I don't even think it is big enough for more than one jar. Mostly they are for beans.


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"Man was born free and is every where in chains."


Edited by lvleph (11/20/02 03:54 PM)


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OfflineShroom-Nuff
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Registered: 11/11/02
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Re: :Possible to use microwave to sterilize? [Re: lvleph]
    #1070560 - 11/20/02 05:05 PM (14 years, 23 days ago)

microwaving a substrate wont work...your just going to waste your time and get contams...


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OfflineFunGuyToBeWith
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Registered: 11/01/02
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Re: :Possible to use microwave to sterilize? [Re: Shroom-Nuff]
    #1070612 - 11/20/02 05:16 PM (14 years, 23 days ago)

Microwaveing will work,  but the key is to know for how much time.  One the teks talks about microwaveing and also i think the FAQ's talk about it.  Microwaves heat uneven,  so it makes it hard.  The TEK i read said that you microwave for 8 mins.    :tongue: 


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Offlinecookdandbombd
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Registered: 08/31/02
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Last seen: 13 years, 10 months
Re: :Possible to use microwave to sterilize? [Re: FunGuyToBeWith]
    #1070914 - 11/20/02 06:25 PM (14 years, 23 days ago)

In reply to:

Microwaveing will work, but the key is to know for how much time. One the teks talks about microwaveing and also i think the FAQ's talk about it. Microwaves heat uneven, so it makes it hard. The TEK i read said that you microwave for 8 mins.




Here's the bit you're talking about pasted in.

In reply to:

Thanks to this innovative technique, pressure-cooker sterilization may be a thing of the past. Why didn't someone think of this before? Well, here it is:

You will need to use PLASTIC containers (i.e Tupperware). Punch holes on the lids as per PF's method. Pre-sterilize the containers by placing them in a tray of water a few millimeters deep. Set the microwave for 8 minutes and verify that the power is on "high".
Carefully remove the containers and add the substrate.
Once again, place the containers back on the trays. Make sure that you have some water in the tray (just a few millimeters deep is enough). Don't forget that you need to have the innoculation holes punched even before pre-sterilization (otherwise you'll have a messy microwave to clean up when the substrate heats up).
Thats it! Let cool (for a few hours at least). Innoculate in the usual manner. The individual who brought this technique to life claims to have employed it succesfully....and I have no reason to doubt.




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Amazon Shop for: ½ Pint Jars, Pressure Cooker, Wild Bird Seed

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