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PhytoExtractum Shop: Maeng Da Thai Kratom Leaf Powder

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OfflineGeneric
Registered: 11/12/13
Posts: 176
Loc: Oregon
Last seen: 1 day, 20 hours
Agar in a SAB - GE filter needed? attempt #1
    #19271285 - 12/13/13 03:27 PM (10 years, 1 month ago)

So i've got agar, LME, and those really small short wide-mouth 4-oz mason jars.

I will PC 6 no-pour dishes.

I know that the jars won't break under pressure without a filter in the lid, but if there is a vacuum in the jars, won't opening them up draw in air and increase chances of contamination?

I've been using polyfill filters in 1/4inch hole for years.  I know it is not ideal, but I've had no problems and it's always worked great for me.  Is that really bad for agar?  (i could see the agar boiling up and getting stuck to the polyfill, but I can leave minimal polyfill hanging down from the hole, and be sure to bring the temp/pressure up and down gradually.)

I've got some synthetic filter discs, but no silicone... is there a good way to use those without attaching?  what if i used 2 jar lids both with a hole in the center, and put the SFD in between them, then closed the lid ring over both of them to fasten it all together?  would that be best?


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OfflineGeneric
Registered: 11/12/13
Posts: 176
Loc: Oregon
Last seen: 1 day, 20 hours
Re: Agar in a SAB - GE filter needed? attempt #1 [Re: Generic]
    #19271306 - 12/13/13 03:34 PM (10 years, 1 month ago)

wait, these just say "Whatman - Filter Papers - 5 - Qualitative - circles - 70mm - Cat No 1005 070" 

are these even what should be used?  I got them thrown in an old trade... i assume they're good sfd's?
or is it just filter paper for a buchner funnel or something?


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OfflinecronicrFacebook
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Registered: 08/07/11
Posts: 61,436
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Re: Agar in a SAB - GE filter needed? attempt #1 [Re: Generic]
    #19271426 - 12/13/13 04:03 PM (10 years, 1 month ago)

Quote:

Generic said:

I know that the jars won't break under pressure without a filter in the lid, but if there is a vacuum in the jars, won't opening them up draw in air and increase chances of contamination?





yep
Quote:

Generic said:


I've been using polyfill filters in 1/4inch hole for years.  I know it is not ideal, but I've had no problems and it's always worked great for me.  Is that really bad for agar?  (i could see the agar boiling up and getting stuck to the polyfill, but I can leave minimal polyfill hanging down from the hole, and be sure to bring the temp/pressure up and down gradually.)





i haven't had any issues using polly, just trim it with scissors first


Quote:

Generic said:
wait, these just say "Whatman - Filter Papers - 5 - Qualitative - circles - 70mm - Cat No 1005 070" 

are these even what should be used?  I got them thrown in an old trade... i assume they're good sfd's?
or is it just filter paper for a buchner funnel or something?



The Whatman papers are just that - paper.

http://www.shroomery.org/forums/showflat.php/Number/19205431#19205431


--------------------

It doesn't matter what i think of you...all that matters is clean spawn

I'm tired do me a favor


Edited by cronicr (12/13/13 04:21 PM)


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OfflineGeneric
Registered: 11/12/13
Posts: 176
Loc: Oregon
Last seen: 1 day, 20 hours
Re: Agar in a SAB - GE filter needed? attempt #1 [Re: cronicr]
    #19271539 - 12/13/13 04:32 PM (10 years, 1 month ago)

why would someone give me filter papers in a mycology trade? What uses do they have with mycology?

I could use them to filter solids in a tincture...  but i don't have a vacuum aspirator so that would take too long...


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OfflineGeneric
Registered: 11/12/13
Posts: 176
Loc: Oregon
Last seen: 1 day, 20 hours
Re: Agar in a SAB - GE filter needed? attempt #1 [Re: Generic]
    #19274598 - 12/14/13 12:38 PM (10 years, 1 month ago)

I'm going to try a first batch, but damn I guess I only have 4 small jars good for no-pour agar. 

how much water+agar+lme should i mix for 4 4-oz mason jars?

250ml water
5g agar agar
5g light malt extract?

some recipes say to use a 10g LME with 8-9g agar, some suggest the other way around, with 9g LME with 10g agar.

what is good for the no-pour agar teks, i'm sure technique has been refined over the years, and it sounds like we want to avoid pooling water, so maybe more agar is good?


Edited by Generic (12/14/13 01:15 PM)


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OfflinecronicrFacebook
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Posts: 61,436
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Re: Agar in a SAB - GE filter needed? attempt #1 [Re: Generic]
    #19275019 - 12/14/13 02:40 PM (10 years, 1 month ago)

i'd go for the firmer agar -less nutes


--------------------

It doesn't matter what i think of you...all that matters is clean spawn

I'm tired do me a favor


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Invisible36fuckin5
Alchemycologist


Registered: 08/11/03
Posts: 12,079
Loc: Diving into Mystical Territori...
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Re: Agar in a SAB - GE filter needed? attempt #1 [Re: cronicr]
    #19275199 - 12/14/13 03:25 PM (10 years, 1 month ago)

Not sure exactly how much you'll need, but I'll tell you 4 plates isn't enough to work with.

For 1L of agar, you should use somewhere around 20-25g of agar and weigh out your LME to around 2% concentration by weight. Assume water is 1 g/ml.


--------------------
Redd Foxx said:
If you're offended I don't give a shit and don't come see me no more.

Pat The Bunny said:
A punk rock song won't ever change the world, but I can tell you about a couple that changed me.

bodhisatta said:
i recommend common sense and figuring it out.

These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.


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