Brilliant Carboy Design
Posted: Wed Nov 20, 2013 6:00 pm
Atlantic Canada Based Homebrew & Beer Appreciation Club
http://www.brewnosers.org/forums/
They already have... it's called a plastic bucket..LiverDance wrote:quick, somebody patent a plastic version
I'd rather knock over an empty carboy and smash it on a tile floor in the dark in my bare feet than use plastic.LiverDance wrote:quick, somebody patent a plastic version
Less chance for potential sites of bacteria growth and infection. A scratch in plastic can harbour some nasty stuff that isn't easy to get rid of. I'm with X, glass or stainless only here.GuingesRock wrote:I never did fully understand carboys and the need for them, and the impracticality of them. But what's the difference between that and a clear plastic bucket with a snap on lid?
Oh. I meant what's the difference between this plastic carboy with a big lid and a plastic bucket with a lid? I use stainless steel.jeffsmith wrote:Less chance for potential sites of bacteria growth and infection. A scratch in plastic can harbour some nasty stuff that isn't easy to get rid of. I'm with X, glass or stainless only here.GuingesRock wrote:I never did fully understand carboys and the need for them, and the impracticality of them. But what's the difference between that and a clear plastic bucket with a snap on lid?
I misread. Been a long day apparently.GuingesRock wrote:Oh. I meant what's the difference between this plastic carboy with a big lid and a plastic bucket with a lid? I use stainless steel.jeffsmith wrote:Less chance for potential sites of bacteria growth and infection. A scratch in plastic can harbour some nasty stuff that isn't easy to get rid of. I'm with X, glass or stainless only here.GuingesRock wrote:I never did fully understand carboys and the need for them, and the impracticality of them. But what's the difference between that and a clear plastic bucket with a snap on lid?
Do glass carboy users use rubber bungs? I wondered if rubber might hold yeasts and bacteria, particularly if it is old and crazed, and does that defeat the purpose of using glass carboys?mr x wrote:I'd rather knock over an empty carboy and smash it on a tile floor in the dark in my bare feet than use plastic.
Rubber for sure is more susceptible to bacterial growth than glass. When I started brewing I did quite a bit of digging into the research literature to see what materials would be best. Glass is by far least susceptible to bacterial growth, followed by stainless steel (around 2x higher), then copper (5-10x higher), and finally then plastics and rubber (more than 100x higher than glass). However, I have no problem using rubber bungs in my glass carboys as the rubber never comes in contact with the beer directly, and it is pretty easy to sanitize them with boiling water or star san. If they start to crack though, I replace them, as they are quite cheap.GuingesRock wrote:Do glass carboy users use rubber bungs? I wondered if rubber might hold yeasts and bacteria, particularly if it is old and crazed, and does that defeat the purpose of using glass carboys?mr x wrote:I'd rather knock over an empty carboy and smash it on a tile floor in the dark in my bare feet than use plastic.
Jeff, My question wasn't written clearly and could have been interpreted either way. I guess we all have long days.
That's interesting. I may have mentioned beforegm- wrote:Rubber for sure is more susceptible to bacterial growth than glass. When I started brewing I did quite a bit of digging into the research literature to see what materials would be best. Glass is by far least susceptible to bacterial growth, followed by stainless steel (around 2x higher), then copper (5-10x higher), and finally then plastics and rubber (more than 100x higher than glass). However, I have no problem using rubber bungs in my glass carboys as the rubber never comes in contact with the beer directly, and it is pretty easy to sanitize them with boiling water or star san. If they start to crack though, I replace them, as they are quite cheap.GuingesRock wrote:Do glass carboy users use rubber bungs? I wondered if rubber might hold yeasts and bacteria, particularly if it is old and crazed, and does that defeat the purpose of using glass carboys?mr x wrote:I'd rather knock over an empty carboy and smash it on a tile floor in the dark in my bare feet than use plastic.
Jeff, My question wasn't written clearly and could have been interpreted either way. I guess we all have long days.
I'm not sure who or if someone might have said plastic is a must, but there are a few styles where flavours attributed to oxidation are typical or acceptable. Sherry-like flavours are common in old ales and English Barleywines, Flanders Brown Ale, possibly aged Weizenbocks and wood-aged beer, musty flavours in cellared styles like Biére de Garde. I would suspect for most homebrewers there is enough oxygen naturally occurring from the mash, boil, racking and bottling for the yeast to feed on and to possibly impart these optional flavour characteristics over time that it wouldn't be necessary to intentionally introduce more oxygen by selection of a breathable fermentation vessel.dexter wrote:... if Im not mistaken someone on the BN said that for certain beers plastic is a must because even sealed they allow some air through.