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English.Tyvek History

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Changed lines 1-6 from:

(:title Homemade filter discs test:)

Homemade filter discs test

I conducted a test using filters made of TyvekTM foil.

to:

(:title Homemade Tyvek filter discs test:)

Homemade Tyvek filter discs test

I conducted a test using filters made of TyvekTM material.

Changed lines 7-13 from:

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.

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.

to:

I prepared 4 birdseed jars, 2 are covered with the polyfill lid like outlined in the Polyfil filter lid for Simple Minds, and 2 are covered with squares of TyvekTM hold down by the rim of the lid. The variety of Tyvek was the thin Tyvek used in construction, "Tyvek house wrap".

I inoculated them with Ecuador rye grain spawn and incubate at 29°C.

After 2 days fresh growth was 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 were shaken to distribute the newly colonized kernels and put back into the incubator.

Changed lines 16-18 from:

After 3.5 days into colonisation the jars look like this.

to:

After 3.5 days into colonisation the jars looked like this.

Changed lines 20-21 from:

6 days after inoculation the jars are colonized.

to:

6 days after inoculation the jars were colonized.

Changed lines 24-27 from:

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.

to:

If you look carefully you will notice, that the Tyvek filter jars have a thin layer of 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(about 1/2 inch in diamter) and thus only partially expose the filter surface.

Changed line 30 from:

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.

to:

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

Added lines 1-31:

(:title Homemade filter discs test:)

Homemade filter discs test

I conducted a test using filters made of TyvekTM 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.

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.

After 3.5 days into colonisation the jars look like this.

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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Page last modified on April 15, 2008, at 04:12 PM