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OfflineAnnoA
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Homemade filter discs test and free samples!
    #516281 - 01/10/02 07:22 PM (20 years, 8 months ago)

I?m conducting a test using filters made of Tyvek TM foil.

I prepared 4 birdseed jars, 2 are covered with the polyfill lid like outlined in the Polyfill for Dummies tek, and 2 are covered with squares of Tyvek TM hold down by the rim of the lid.
I?m going to inoculate them with Ecuador rye grain spawn tomorow, incubate at 29?C and report on the progress in the following days.


Edited by Anno (01/16/02 06:17 PM)


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OfflineXAZIA
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Re: Homemade filter discs test [Re: Anno]
    #516287 - 01/10/02 07:34 PM (20 years, 8 months ago)

excellent idea anno, thanx, i will be interested in the outcome.


--------------------
"Emancipate yourself from mental slavery, none but ourselves can free our minds."

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Remember, EGOISM is the beginning, the source, and the root of EVIL!

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InvisibleJared
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Deleted [Re: Anno]
    #516288 - 01/10/02 07:36 PM (20 years, 8 months ago)

Content Removed.


Edited by Jared (04/01/04 10:06 AM)


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Invisibleluvdemshrooms
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Re: Homemade filter discs test [Re: Anno]
    #516520 - 01/11/02 12:52 AM (20 years, 8 months ago)

Construction
One of the most popular and widely known applications of Tyvek? is in the construction industry, where it is used to increase air and water resistance, helping to lower heating and cooling costs in buildings and providing better protection against water and moisture intrusion. The unique qualities of Tyvek? help stop air flow through wall cavities; help hold out bulk water and wind-driven rain; and allow moisture vapor to escape from inside walls. The result is a more comfortable, energy-efficient building with far fewer chances for damage from degradation effects.

Helps stop air flow?


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You cannot legislate the poor into prosperity by legislating the wealthy out of prosperity. What one person receives without working for another person must work for without receiving. The government cannot give to anybody anything that the government does not first take from somebody else. When half of the people get the idea that they do not have to work because the other half is going to take care of them and when the other half gets the idea that it does no good to work because somebody else is going to get what they work for that my dear friend is the beginning of the end of any nation. You cannot multiply wealth by dividing it. ~ Adrian Rogers


Edited by luvdemshrooms (01/11/02 12:58 AM)


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Invisibleluvdemshrooms
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Re: Homemade filter discs test [Re: Anno]
    #516522 - 01/11/02 12:54 AM (20 years, 8 months ago)

Medical Packaging
An industry standard for more than 30 years, Tyvek? is used in virtually every form of sterile medical packaging. That's because Tyvek? delivers an optimum balance of bacteria penetration resistance, tear strength, puncture resistance and clean peel, as well as compatibility with existing and emerging sterilization methods.

Sounds like it doesn't let anything in, maybe including air?


--------------------
You cannot legislate the poor into prosperity by legislating the wealthy out of prosperity. What one person receives without working for another person must work for without receiving. The government cannot give to anybody anything that the government does not first take from somebody else. When half of the people get the idea that they do not have to work because the other half is going to take care of them and when the other half gets the idea that it does no good to work because somebody else is going to get what they work for that my dear friend is the beginning of the end of any nation. You cannot multiply wealth by dividing it. ~ Adrian Rogers


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Invisibleluvdemshrooms
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Re: Homemade filter discs test [Re: Anno]
    #516523 - 01/11/02 12:57 AM (20 years, 8 months ago)

Covers
Because Tyvek? is water resistant, yet breathable, it is ideal for car, boat and camper covers. The unique nonwoven structure of Tyvek? protects against acid rain and salt spray by holding out more water than cotton, polyester or cotton/polyester covers; however, because it is breathable, it also allows trapped moisture to escape, helping to prevent rot and mildew. What's more, because Tyvek? does not absorb water, it is significantly lighter than other covers -- even when wet. Tyvek? is a proven shield from the sun, blocking 98 percent of the sun's damaging ultraviolet (UV) rays, and it is specially engineered to keep out abrasive dirt and dust, so finishes are less likely to become dull or stained.

Allows trapped moisture to escape?

Sorry, should have made this one post. My apologies to all.


--------------------
You cannot legislate the poor into prosperity by legislating the wealthy out of prosperity. What one person receives without working for another person must work for without receiving. The government cannot give to anybody anything that the government does not first take from somebody else. When half of the people get the idea that they do not have to work because the other half is going to take care of them and when the other half gets the idea that it does no good to work because somebody else is going to get what they work for that my dear friend is the beginning of the end of any nation. You cannot multiply wealth by dividing it. ~ Adrian Rogers


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OfflineAnnoA
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Re: Homemade filter discs test [Re: Anno]
    #516531 - 01/11/02 01:15 AM (20 years, 8 months ago)

I sterilized the jars with the filters on without problems. The filters withstand the 120?C of pressure cooking without visible structure change.(according to data HDPE has a melting point of 130?C).

There was a difference between the polyfill lid and the Tyvek filter jars as the Tyvek jars vere easyer to shake, leading to the conclusion that more water evaporated through the Tyvek filters than through the polyfill lids, which is reasonable if you take the active area into account, that being much greater with the Tyvek filters.

The jars were inoculated with each 1 heaped teaspoon of rye grain spawn, shaken and put into an incubator at 29?C.


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OfflineAnnoA
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Re: Homemade filter discs test [Re: Anno]
    #518288 - 01/12/02 04:32 PM (20 years, 8 months ago)

After 2 days fresh growth is noticable both in polyfill filter jars and in Tyvek filter jars. I couldn?t tell if the growth is faster in any of them.
The jars will be shaken today to distribute the newly colonized kernels and put back into the incubator.




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InvisibleMicronMagick
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Post deleted by users_request [Re: Anno]
    #518480 - 01/12/02 09:28 PM (20 years, 8 months ago)

Post deleted by administrator.


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OfflineAnnoA
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Re: Homemade filter discs test [Re: MicronMagick]
    #518534 - 01/12/02 10:44 PM (20 years, 8 months ago)

>can you blow threw the poly-filled hole?
Yes.
You can also blow(or better to say suck) air through Tyvek. The polyfill lid is more permeable per area, but the area of the Tyvek filter is bigger.


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InvisibleCLuB99
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Re: Homemade filter discs test [Re: Anno]
    #518696 - 01/13/02 02:37 AM (20 years, 8 months ago)

anno, any info on where to buy it??
there isn't a link "buy it" on the link you provided...


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OfflineAnnoA
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Re: Homemade filter discs test [Re: CLuB99]
    #518708 - 01/13/02 02:47 AM (20 years, 8 months ago)

Any store where you can get material for building or renovating your house should have it, it?s a pretty common and widely used material, sold on rolls of several hundred meters, but at least where I got it, you can buy it by the meter.


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OfflineAnnoA
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Re: Homemade filter discs test [Re: Anno]
    #519978 - 01/14/02 09:21 AM (20 years, 8 months ago)

After 3.5 days into colonisation the jars look like this.






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OfflineTrail_Blazer
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Re: Homemade filter discs test [Re: Anno]
    #520150 - 01/14/02 03:11 PM (20 years, 8 months ago)

Anno were the rye grain spawn jars prepared multi-spore or from agar isolate?  Just wondering if those four jars all have the same strain in em. :smile:

Peace


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OfflineAnnoA
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Re: Homemade filter discs test [Re: Trail_Blazer]
    #520152 - 01/14/02 03:19 PM (20 years, 8 months ago)

Isolate. I cloned a mushroom.


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OfflineTrail_Blazer
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Re: Homemade filter discs test [Re: Anno]
    #520159 - 01/14/02 03:27 PM (20 years, 8 months ago)

Got ya. :smile:


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OfflineTrail_Blazer
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Re: Homemade filter discs test [Re: Anno]
    #520160 - 01/14/02 03:27 PM (20 years, 8 months ago)

Sorry for the double post, cat stepped on the keyboard. :smile:


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Visit FSR


Edited by Trail_Blazer (01/14/02 03:29 PM)


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OfflineAnnoA
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Re: Homemade filter discs test [Re: Trail_Blazer]
    #522135 - 01/16/02 04:16 PM (20 years, 8 months ago)

6 days after inoculation the jars are colonized.



If you look carefully you will notice, that the upper layer of the Tyvek filter jars has uncolonized, dry kernels on the top of the jar during the excessive gas exchange through the filter.

To counteract this one should make the hole in the lid smaller and thus only partially expose the filter surface.

No contamination problems were observed in jars with either kinds of filters.

All in all the test was a succes, prooving that "Tyvek house wrap" is suitable for use as an filter in preparing of grain spawn.


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InvisibleWorld Spirit
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Re: Homemade filter discs test [Re: Anno]
    #522154 - 01/16/02 05:10 PM (20 years, 8 months ago)

Deleted by admin


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InvisibleCompiler
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Post deleted by Administrator [Re: Anno]
    #522163 - 01/16/02 05:25 PM (20 years, 8 months ago)



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