casebrew

Recipes 

Here's an intreresting link I found : <shttp://www.alphap.com/basics/compare.html>

With an interesting chart.

Check the right hand column, "recycle numbers". The O2 column is oxygen transmisiliby, lower is better.

Some stuff I noticed: #7 bottles pass only 1/2 as much as #1 bottles. So #7 is TWICE AS GOOD FOR BEER, as far as staling goes. #2, as in bucket fermenters, pass 53 times as much oxygen as a #1 bottle. So #7 plastic would be 100 times better than a plastic bucket. I'll repeat that:

#7 PLASTIC IS BETTER THAN #1 PLASTIC.

#7 PLASTIC IS 100 TIMES BETTER THAN A PLASTIC BUCKET.

So, if a plastic #2 bucket is just fine, then it just don't matter, does it?


Note also the CO2 transmissability column, that each of those plastics pass CO2 at 4 to 7 times the speed of oxygen. SO:

YOUR BEER WILL GO FLAT, BEFORE IT GOES STALE, IN ANY KIND OF PLASTIC.

I did some googling on the #1 carboys. All the sales literature seems to compare them to glass. Nothing to compare them to the mass market water jugs. No "Our jugs are better than #7 jugs because ______"

__________________
So far, I've had more experience thinking than I've had brewing....you don't think they are mutually exclusive, do you?

57 batches so far,
33 wine, mostly Loquat, peach, plum, prickly pear
22 beers and ciders
1 sauerkraut
1 Tequila, from a prickly pear wine experiment that didn't work. I call it "Prickly Heat"

Sir Humpsalot

Recipes 

Don't forget to take thickness into account. Does O2 permeability decrease linearly or exponentially with an increase in thickness?

I don't know the answer to that, but I know enough to ask the question...

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In Process: Mango Beer, Homebrewers Pale Ale
Bottled/Kegged:Spicy Light Rye, Rice-adjunct Pale Ale, Mild Bourbon Porter, Roasty Stout, Basic Light Mead, Bourbon County Stout Clone
Up Next: Berlinerweiss, Chocolate Raspberry Ale, and American IPA

the_bird

Recipes 

Here's the problem.

Recycle Code 7 means "other" plastic.

Source: http://www.kenplas.com/topic/recyclelogo/

Alternatively,

Source: http://www.earthodyssey.com/symbols.html

Now, your website states that Polylactide is Recycle Code 7 - that DOES NOT mean that all Recycle Code 7 is Polylactide. It simply means that Polylactide is not one of the other six that can be recycled.

So, if you buy a bottle that is Code 7, it COULD be Polylactide; if it is, you're in luck.

It also could be pretty much anything else, which would put you SOL.

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Come join Yankee Ingenuity!

"I'm kind of toasted. But I looked at my watch and it's only 6:30 so I can't stop drinking yet." - Yooper's Bob
"Brown eye finally recovered after the abuse it endured in Ptown last weekend, but it took almost a full week." - Paulie
"no, he just doesn't speak 'stupid'. i, however, am fluent...." - motobrewer

abracadabra

Recipes 

Very interesting since #7 is listed as "Other" how would you know that you are getting PLA plastic or something else?

Maybe it is I don't know.

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Do what you like!
Brew what you like!

kornkob

Recipes 

Well, you'd order PLA plastic from your manufacturer---- the recycle code isn't there to help you spec out your purchase, really. It's there to aid in recycling efforts.

__________________
Jason 'Kornkob' Robinson

I wanna move to Theory. Everything works in Theory.

casebrew

Recipes 

I guess all those guy brewing in #7 have been just flat out lucky then? All of them?

Anybody got some examples of water bottles labeled #7, that are known to be somthing other than Polylactide? Anybody? Beuller?

But again, anydamn stuff is better than the ubiquitous #2 bucket.

__________________
So far, I've had more experience thinking than I've had brewing....you don't think they are mutually exclusive, do you?

57 batches so far,
33 wine, mostly Loquat, peach, plum, prickly pear
22 beers and ciders
1 sauerkraut
1 Tequila, from a prickly pear wine experiment that didn't work. I call it "Prickly Heat"

the_bird

Recipes 

Do what you want to do - but your link proves nothing.

__________________
Come join Yankee Ingenuity!

"I'm kind of toasted. But I looked at my watch and it's only 6:30 so I can't stop drinking yet." - Yooper's Bob
"Brown eye finally recovered after the abuse it endured in Ptown last weekend, but it took almost a full week." - Paulie
"no, he just doesn't speak 'stupid'. i, however, am fluent...." - motobrewer

ayrton

Recipes 

I'm just happy that better bottles and fermentation buckets are 100% recyclable.

<-- Tree hugger

__________________
Primary 1: None
Primary 2: None
Secondary 1: None
Conditioning: None
Drinking: None (!)
Recently Kicked: None
Up Next: Beats me!

ayrton

Recipes 

Meh, the bucket seems to work fine for a primary. If it ain't broke, don't fix it and all that...

__________________
Primary 1: None
Primary 2: None
Secondary 1: None
Conditioning: None
Drinking: None (!)
Recently Kicked: None
Up Next: Beats me!

Cheesefood

Recipes 

I've aged two in plastic bottles and I didn't particularly care for either batch. I'm not 100% sure it's due to the bottle but evidence points. I'm doing a final test where I split my melomel into two vessels (out of necessity). I'll post the differences.

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Past Winners: Caramel Cream Ale #1, Hoegaarden Clone, Boom-Boom Vanilla Ale, Lazy Monk Abbey Style, Amarillo Cream Ale. (AG),

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