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Offlinepantari
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Registered: 05/22/20
Posts: 4
Last seen: 2 years, 11 months
Tyvek
    #27124837 - 01/03/21 09:35 PM (3 years, 1 month ago)

Hey guys, thats my first post and I have the suspicion, that the following is not new to anyone. If so, just delete the post or ignore it.

Anyway, I spent quite a few hours yesterday, figuring out which filters to use after my first batch of grain spawn had a bacterial contamination. (Could have been sterilization as well, but I won`t risk it again with polyfill)
Technically, the best Solution are the PTFE membrane filters (SFDs) and thats what I ordered in the end, but at first I was trying to find some Tyvek that fits the purpose. Now there is a lot of different types and you can buy various types of it all over the internet (or just collect it from a post office in the US as I have read here), but the medical Tyvek seems to not be sold anywhere.
After a few hours I asked a friend who works as a nurse to bring me some packaging of the medical devices they use in the hospital and indeed, half of them where made from Tyvek.
Now, I don't know which type of Tyvek they use, but if it is good enough to keep a vein catheter sterile, it should work for mushroom cultivation as well.
It lets steam pass (tested it with a cold spoon inside the bag over cooking water and the steam condensed on the metal, it survived the PC at 1bar (15PSI) without deformation and it seems to be hydrophobic.
I will use it now as an additional layer to protect the SFDs.

So if any of you is searching for the good Tyvek stuff, just ask any doctor/nurse you know.

My Enoki clones are looking forward to test it :smile:


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Offlinejcm4620
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Registered: 05/26/19
Posts: 6,700
Last seen: 2 years, 2 days
Trusted Cultivator
Re: Tyvek [Re: pantari]
    #27124859 - 01/03/21 09:49 PM (3 years, 1 month ago)

well i hope ur usin agar cuz if ur just shooting spores into grains id bet my $$ on that bein the culprit b4 a filter issue


--------------------
PANAEOLUS FRUITING MADE SIMPLE



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Offlinepantari
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Registered: 05/22/20
Posts: 4
Last seen: 2 years, 11 months
Re: Tyvek [Re: pantari]
    #27125223 - 01/04/21 04:27 AM (3 years, 1 month ago)

Yes, I used Agar and the dish was fine.

I previously had lots of issues with spore syringes though, which led me to the point to work with agar in the first place.


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