ipscman
Well-Known Member
I've heard JZ mention this can be a problem with long term fermentation (e.g., Barleywines). Anyone have any actual data on the subject?
Material
Oxygen Permeability cc-mm/m2-day, 23C
Wood, Oak 57
High-density polyethylene HDPE 18
Polypropylene PP 20
Polycarbonate PC 36
Nylon (not oriented) 0.62
Saran 0.02
Vinyl 20
Silicone 10600
Water 34400
Thank you for making time to find this.
Wow that is impressive impermiability for saran. Maybe I should just wrap my plastic fermenters with it.
Material
Oxygen Permeability cc-mm/m2-day, 23C
Wood, Oak 57
High-density polyethylene HDPE 18
Polypropylene PP 20
Polycarbonate PC 36
Nylon (not oriented) 0.62
Saran 0.02
Vinyl 20
Silicone 10600
Water 34400
Tank Volume [L] O2 cc/L.year
Burgundy barrel 300 8.5
Rodenbach tank, wood, small 12,000 0.86
Rodenbach tank, wood, large 20,000 0.53
HDPE bucket 20 220
Homebrew barrel 40 23
Glass carboy, 30cm vinyl immersion tube 20 0.31
Glass carboy, silicone stopper 20 17
Glass carboy, wood stopper 20 0.10
Kinda ironical ain't it.
"Wood, Oak 57 vs High-density polyethylene HDPE 18"
Our much debated buckets have 3.16 time less permeability than a traditional wooden cask. Many of us go all schizophrenic about this plastic s inherent O2 permeability and strive to find any and every alternative to it.
But then, we go to the bottle shop and "pert near" bust a nut (or an ovary I suppose) when we find anything labelled "Oak Aged" and then can't say enough good things about our latest find.
The plain simple truth of the matter is that you can keep your beer in primary well over a month in the bucket and have no perceivable oxidation impacts whatsoever unless you are just beligerantly careless with your handling.
Personally when it comes to fermenters, I just find glass to be easier to keep clean and sanitized. O2 is of no concern.
I use reynolds turkey bags as liners. When fermentation is done, I rack off, pull the bag, tie a knot (to later pitch the cake in the compost), rinse the bucket, and I am done. Doesn't get any easier than that.
Personally when it comes to fermenters, I just find glass to be easier to keep clean and sanitized. O2 is of no concern.
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