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Offlinemrmazdarx9
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filter choice for jars
    #23970405 - 12/31/16 10:36 AM (7 years, 30 days ago)

Whats the best choice for my jars moving onto oats from pf and how I filter my jars is the final thing I need. Im not into polyfil plus its not sold in england other ripping open some cheap pillows.


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Invisiblevan hattonFacebookDiscord
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Re: filter choice for jars [Re: mrmazdarx9]
    #23970416 - 12/31/16 10:38 AM (7 years, 30 days ago)

Sfds, ez felt(not sure if you have it there), mp tape.


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Re: filter choice for jars [Re: mrmazdarx9]
    #23970418 - 12/31/16 10:39 AM (7 years, 30 days ago)

PTFE type SFD > cellulose SFD > polyfil > tyvek > post office tyvek > micropore tape


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InvisiblemushboyMDiscord
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Re: filter choice for jars [Re: bodhisatta]
    #23970427 - 12/31/16 10:43 AM (7 years, 30 days ago)

it was in another thread about MP tape and lids. ive been doing it for awhile.
no more polyfil for me... or the damn cats.

i do a square of tyvek with 2 layers of tape. easy as fuck.

same with plates.


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: mushboy]
    #23970449 - 12/31/16 10:53 AM (7 years, 30 days ago)

Sweet thanks guys those sfds are super expensive for what they are £36 for 12 90mm


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Re: filter choice for jars [Re: mrmazdarx9]
    #23970460 - 12/31/16 10:57 AM (7 years, 30 days ago)

i was going to go all sfds.. even with a bulk order i was looking to spend 80-120 minimum. feck that. my 'filters' have given me 1 contam jar.. and it was my fault.


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Re: filter choice for jars [Re: bodhisatta]
    #23970474 - 12/31/16 11:02 AM (7 years, 30 days ago)

Quote:

bodhisatta said:
PTFE type SFD > cellulose SFD > polyfil > tyvek > post office tyvek > micropore tape



This. Though I used post office tyvek for years and never caused any issues.
Nowadays I use sfd. Leave them whole (buy the right size for your jar opening) and put them underneath the lid.


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: mushboy]
    #23970475 - 12/31/16 11:02 AM (7 years, 30 days ago)

Ive bought a fat bastard size 3xl tyvek overall as it was the same price as large £5 ive read the overall type is better than post office type tyvek? Ill get on sfd when ive gotten used to bulk


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Re: filter choice for jars [Re: mrmazdarx9]
    #23970487 - 12/31/16 11:08 AM (7 years, 30 days ago)

Been using micropore tape which seems to get the job done, no issues there! :thumbup:


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Re: filter choice for jars [Re: Colonel]
    #23970501 - 12/31/16 11:14 AM (7 years, 30 days ago)

free post office tyvek serves me well :shrug:


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: mushboy]
    #23970518 - 12/31/16 11:22 AM (7 years, 30 days ago)

Nothings free in england m.boy


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InvisibleKauaiOrca
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Re: filter choice for jars [Re: mrmazdarx9]
    #23970537 - 12/31/16 11:28 AM (7 years, 30 days ago)

There's also this ultra simple choice, too.

https://www.shroomery.org/forums/showflat.php/Number/22767847


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"The universe is endless, limitless and infinite.  Any effort to define it's boundaries is an attempt to overcome ignorance.  We are physical, mental and spiritual beings ... there is no beginning and there is no end.  There is only memory.  Our repeated loss of memory experiences create the illusion of beginnings and ends.  Immortality is the ability to retain full memory through all consciousness transformations.  Loss of memory is man's greatest curse and, in very real terms, death."

-- Ancient Taoist Master


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: KauaiOrca]
    #23970545 - 12/31/16 11:32 AM (7 years, 30 days ago)

Looked at that but already have 36 ball jars and we cant buy those lids in uk. I also saw RR say thats not a good idea on another thread. Cant remember which thread.

Edit found it : https://www.shroomery.org/forums/showflat.php/Number/23673153#23673153


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InvisibleKauaiOrca
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Re: filter choice for jars [Re: mrmazdarx9]
    #23970553 - 12/31/16 11:35 AM (7 years, 30 days ago)

Quote:

mrmazdarx9 said:
Looked at that but already have 36 ball jars and we cant buy those lids in uk. I also saw RR say thats not a good idea on another thread. Cant remember which thread.




I've found if you're using an inoculant that colonizes really fast, GE's not that important.  The slower the colonizing process, the more it tends to matter.  I truly question how much GE even happens when you put 2-3 layers of micropore tape with Tyvek on there anyway.  Can't imagine it's much.


--------------------
"The universe is endless, limitless and infinite.  Any effort to define it's boundaries is an attempt to overcome ignorance.  We are physical, mental and spiritual beings ... there is no beginning and there is no end.  There is only memory.  Our repeated loss of memory experiences create the illusion of beginnings and ends.  Immortality is the ability to retain full memory through all consciousness transformations.  Loss of memory is man's greatest curse and, in very real terms, death."

-- Ancient Taoist Master


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: KauaiOrca]
    #23970556 - 12/31/16 11:37 AM (7 years, 30 days ago)

Its more about him saying leaving the lid unscrewed is no different to taking it off as contaminates are microscopic.
also I love how mushie rage runs for the hills when RR cuts his suggestion down :rofl: I love mushierage


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Re: filter choice for jars [Re: mushboy]
    #23970557 - 12/31/16 11:37 AM (7 years, 30 days ago)

Quote:

mushboy said:
it was in another thread about MP tape and lids. ive been doing it for awhile.
no more polyfil for me... or the damn cats.

i do a square of tyvek with 2 layers of tape. easy as fuck.

same with plates.





Mushboy question : Why even use Tyvek if you're gonna use MP tape? MP tape is designed to bandage up wounds and keep out bacteria and prevent infections so shouldn't MP tape just suffice on it's own as a lid filter? Is the concern that the grain will dry out? If so why not just use 3 or more pieces?


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Re: filter choice for jars [Re: Dabrit]
    #23970562 - 12/31/16 11:41 AM (7 years, 30 days ago)

i need something to attach the square to the jar.

oops misread:

i could just use the tape but the debate around it led me to also use the tyvek square.
i cut out like 300 1cm x 1cm-ish sqaures so im still using them up.


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OfflineDabrit
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Re: filter choice for jars [Re: mushboy]
    #23970588 - 12/31/16 11:57 AM (7 years, 30 days ago)

Quote:

mushboy said:
i need something to attach the square to the jar.

oops misread:

i could just use the tape but the debate around it led me to also use the tyvek square.
i cut out like 300 1cm x 1cm-ish sqaures so im still using them up.




Ahh I see. well I'm gonna give the MP on it's own a shot. I tried looking around here north of the border for Tyvek and it seems like you can only buy it in too large of quantities(Giant rolls) and I don't think our priority post envelopes up here use Tyvek(At least don't appear to be Tyvek to me).

Looked at home depot for Tyvek coveralls and didn't find anything only coveralls made of some another material. SFD's might be an option in the future but they are expensive and right now money is tight( Looking for work) so I'm gonna stick with the MP and report how my jars panned out.

Also will note I've used MP tape to secure the saran wrap around the edge of one of my agar transfer plates as the saran after being wrapped just didn't wanna stay in place. Will keep a close eye on that plate for contams.

Yikes 300 x 1cm2 pieces!! Must have taken you a while


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: mushboy]
    #23970599 - 12/31/16 12:04 PM (7 years, 30 days ago)

Quote:

mushboy said:
i need something to attach the square to the jar.

oops misread:

i could just use the tape but the debate around it led me to also use the tyvek square.
i cut out like 300 1cm x 1cm-ish sqaures so im still using them up.



Should just run it through a paper shredder they cut up about that size


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Re: filter choice for jars [Re: Dabrit]
    #23970616 - 12/31/16 12:14 PM (7 years, 30 days ago)

I'm using unmodified lids right now and it's sketching me out a bit I have to say. I have all my jars in my SAB at least, and I screw the lids back on when I go to use it. I was using layers of micropore before but again had them colonizing in my SAB.

Your best cheap option would probably be tyvek secured with micropore I think, but for the piece of mind SFDs offer they are priceless.

Can you not import plastic lids for mason jars?


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Offlinemrmazdarx9
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Re: filter choice for jars [Re: ComebackKid]
    #23970633 - 12/31/16 12:24 PM (7 years, 30 days ago)

Probably but that would be really expensive and alot of fuss could just buy sfd's for the same price.


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Re: filter choice for jars [Re: mrmazdarx9]
    #23970954 - 12/31/16 02:18 PM (7 years, 30 days ago)

Quote:

mrmazdarx9 said:
Its more about him saying leaving the lid unscrewed is no different to taking it off as contaminates are microscopic.
also I love how mushie rage runs for the hills when RR cuts his suggestion down :rofl: I love mushierage



mushierage gave a decent reply with a link to Pasty's thread, RR is the one with no subsequent reply which is unfortunate, it is hard to tell if he is exaggerating things or not at times. I doubt he really does think its the exact same as no lid, and if pushed on the point might admit its not.

If your room has high airflow or drafts, e.g. near a door which gets opened a lot, then contams could make it up and past the threads. The whole idea is to give them a "torturous path" so they cannot easily drift into the jar.

Have a look at this old sketch of a version of a "still air box" which John Tyndall had.



You can see at the top of the box there are 2 open tubes with no filter, but they go up and down. This makes it hard for contams to get in as they would have to drift up and down all the way to get inside. If you blew into them of course it could make it in, but it is enough for gas exchange to happen.

Tyndall also used glycerine smeared on the walls in this SAB so contams would stick to it. I mention using this idea in Pasty's thread

Quote:

blackout said:I had sealed unfiltered food jars with regular size metal lids colonising which were only 1/4 full with popcorn grain. I wanted to see if they could colonise with no filter or cracked lid. They stalled at about 70%. I guess there is a certain ratio where there would be enough initial air to colonise 100%.

As the lids were regular, and as my room is prone to contams I did not just want to crack the lid. I sprayed surface disinfectant on the jars lids & upper side walls and put semi transparent sandwich bags over them. When on the jar I smeared the bags against the still wet jars to disinfect the inside of the jar. While still wet I got some petroleum jelly (vaseline) and lifted up the bags a bit and smeared the jelly around the top of the jars neck. Again I wiped the bags around the jars so the inside of the bag was also coated in petroleum jelly. I then unscrew the lid and pull the bag away from the jar a little to make sure it is not making a sealing with the jar with the vaseline.

This was an idea from reading that John Tyndall smeared the wall of his SAB type box with glycerine, the idea being that airbourne contams would stick to the glycerine and it would not dry out like a wall misted with water would.

So the petroleum jelly is doing the same thing. If any contams do get in under the bag they will hopefully stick to the bag or the outside of the jar before they manage to get in. The bag itself might be enough, rather than the mess and small expense of the vaseline.

The jars got to 100% a few days after this. I like the idea of still letting them grow out a bit with lids screwed on so it can be a bit colonised and hopefully resistant if any contams do manage to get in.





If you have questionable filters on your jars I would recommend sticking a bag on them like this. I have filters I am pretty sure are OK but now like to use the bags as a secondary measure.


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