hmmm....
If the dimensions are 545 mm X 470 mm and you assume 6 sides* (a box), you get 1.52 m2 as surface area. With 0.93 cc/m2/day of O2 transmission, you get 1.43 cc/day of O2. For 15 liters of liquid you're getting 0.095 cc/liter/day of O2 which means approximately 35 cc/liter/year of O2 during storage. That isn't too bad.
A carboy may allow about about 17 cc/liter/year, so you could probably age a mead (especially a traditional) in one of these bags without difficulty.
I'll be interested to see you do a comparison.
* If you want to get picky, technically there would be 4 sides with 545 X 470, and two sides that are 470 X470, but it would only change the final answer to about 33 cc/L/year.
If the dimensions are 545 mm X 470 mm and you assume 6 sides* (a box), you get 1.52 m2 as surface area. With 0.93 cc/m2/day of O2 transmission, you get 1.43 cc/day of O2. For 15 liters of liquid you're getting 0.095 cc/liter/day of O2 which means approximately 35 cc/liter/year of O2 during storage. That isn't too bad.
A carboy may allow about about 17 cc/liter/year, so you could probably age a mead (especially a traditional) in one of these bags without difficulty.
I'll be interested to see you do a comparison.
* If you want to get picky, technically there would be 4 sides with 545 X 470, and two sides that are 470 X470, but it would only change the final answer to about 33 cc/L/year.
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