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Amazon Shop for: ½ Pint Jars, Brown Rice Flour, Rye Grain

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Offlineshallow
member
Registered: 07/04/04
Posts: 229
Last seen: 8 years, 9 months
Tyvek == ! so good for contams?
    #3025369 - 08/19/04 09:36 PM (12 years, 5 months ago)

Made a few BRF jars last friday. I was experimenting and only used Tyvek as a lid and taped the inoc holes. Problem is almost every jar is contamed, 4 so far out of 6. Ive never had a contamed jar and Ive used the same technique I always have. Ive got great colonization time, two jars are almost completly done after 6 days (although 1 is contamaed), but that could be due to the fact that they are amazons.

So is Tyvek not an adequate contam barrier by itself? Any experience?


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InvisibleNOS4A2
Sh!tApple

Registered: 07/22/04
Posts: 510
Loc: notfarfromtheshittree Flag
Re: Tyvek == ! so good for contams? [Re: shallow]
    #3025457 - 08/19/04 09:51 PM (12 years, 5 months ago)

Just wondering.. did you do anything to sterilize the tyvek?


--------------------
Hail to the King, Baby
CulturingTech


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Offlinesublimesubmind
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Registered: 05/25/04
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Re: Tyvek == ! so good for contams? [Re: NOS4A2]
    #3025501 - 08/19/04 09:57 PM (12 years, 5 months ago)

good practice is to use polyfill in the holes to further prevent contam, but as far as i know, tyvek should stop bacteria, although it supposedly lets air pass through so maybe airborne contams, or at least some can make it through.... not sure though....


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Offlinemr_X_
stranger danger

Registered: 07/11/04
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Re: Tyvek == ! so good for contams? [Re: shallow]
    #3025550 - 08/19/04 10:04 PM (12 years, 5 months ago)

i had the same with tyvek lots of comtam.and for the ones who ask
about sterilize thats what the pc takes care of ,no problems with polyfill .


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InvisibleNOS4A2
Sh!tApple

Registered: 07/22/04
Posts: 510
Loc: notfarfromtheshittree Flag
Re: Tyvek == ! so good for contams? [Re: mr_X_]
    #3025650 - 08/19/04 10:24 PM (12 years, 5 months ago)

Sorry I assumed the tyvek was put on after pc'ing since the properies of tyvek might compromise the consistancy (water content) of the cakes, at least that's how i'd do it if I planned on not having any type of rigid lid.By the way how big a hole do you think it takes to stick a needle in a tyvek only lid. Seems like you'd end up with a bigger hole trying to stick a "cotton ball" in a needle hole! How 'bout them crazy little round fabric band-aids.


--------------------
Hail to the King, Baby
CulturingTech


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Invisibledustz
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Registered: 08/02/03
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Loc: Canadia
Re: Tyvek == ! so good for contams? [Re: NOS4A2]
    #3025675 - 08/19/04 10:30 PM (12 years, 5 months ago)

Check out how doc34 prepares his lids...should give you an idea of how tyvek and polyfill are used. Note that a lot of people only use one or the other, but two layers of protection are better than one :smile:

http://www.shroomery.org/forums/showflat...ev=#Post2919511

*edit*
I just noticed that you're talking about PF cakes which don't usually involve tyvek. If you want to use it with PF style jars you should probably do like Magash' does in his rye tek. You just have 4 holes in your lid instead of 2...

http://www.shroomery.org/forums/showflat...ev=#Post2988500


Edited by dustz (08/19/04 10:39 PM)


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InvisibleNOS4A2
Sh!tApple

Registered: 07/22/04
Posts: 510
Loc: notfarfromtheshittree Flag
Re: Tyvek == ! so good for contams? [Re: dustz]
    #3025718 - 08/19/04 10:38 PM (12 years, 5 months ago)

I've checked your link and nowhere is there polyfill in a tyvek disk that doesn't have a metal lid under or over it. Tyvek only lid... thanx antway


--------------------
Hail to the King, Baby
CulturingTech


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Offlinescatmanrav
Brainy Smurf

Registered: 05/08/04
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Last seen: 4 years, 19 days
Trusted Cultivator
Re: Tyvek == ! so good for contams? [Re: NOS4A2]
    #3025957 - 08/19/04 11:31 PM (12 years, 5 months ago)

Tyvek is not used as a lid by itself for a reason. Because it doesnt work. Use the metal+Tyvek and be happy :smile:


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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Amazon Shop for: ½ Pint Jars, Brown Rice Flour, Rye Grain

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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