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Old 08-14-2009, 11:33 PM   #11
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The pellicle doesnt enter into it. Its permeability through the walls of the bucket. Here is a list of oxygen permeability of different aging vessels taken from page 220 of "Wild Brews" by Jeff Sparrow.

  • Rodenbach Foudre (20,000 liters): 0.53
  • Rodenbach Foudre (12,000 liters) : 0.86
  • wine barrel (300 liters): 8.5
  • Homebrew oak barrel (40 liters) : 23
  • homebrew bucket (20 liters) 220
  • glass carboy with silicon stopper (20 liters): 17
  • glass carboy with wooden stopper (20 liters) : 0.10

The number after the colon is the cubic centimeters of oxygen per liter per year.

The list is abreviated.

As you can see, plastic is MUCH more permeable than wood. Oxygen leads to acetification.
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Old 05-17-2010, 07:30 PM   #12
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I learned about this the hard way. I had to dump my 10 gallons of lambic that was sitting in plastic.

Primary: Saison w/Dupont strain

Secondary: Belgian Pale, Saison d'Lupulin, Farmhouse IPA

Kegged: Saison d'Lupulin

Sour Secondary: Cabernet Oud Bruin, Sour Cherry Oud Bruin, Sour Ale base, Kriek, Wild Night, Wild Night w/Blueberries, Wild Noel

Sour Cellared: Cabernet Lambic, Wild American, Merlot Lambic, Namaste Golden Ale, Saison Twenty-Three, Spring Equinox Saison, Belgian Pale, Orval Clone, Chardonnay Saison, Sour Cherry Saison, Cabernet Flemish Red, Bordeaux Lambic
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