Cedar Rapids Brewing Society

I have a friend here at work whose wife loves a meadery out of colorado. So every couple of months he gives me a jingle asking if I would like some blue colored grolsch bottles. I have collected quite a few of these so I don't need any, however, thought I would post and see if any of you do.

He is charging $5 for 6 of them.

Just reply here if interested.

Are these 16oz?

On Wednesday 27 July 2011 9:06:37 am you wrote:

I have a friend here at work whose wife loves a meadery out of colorado.
So every couple of months he gives me a jingle asking if I would like some
blue colored grolsch bottles. I have collected quite a few of these so I
don't need any, however, thought I would post and see if any of you do.

He is charging $5 for 6 of them.

Just reply here if interested.

Post generated using Mail2Forum (http://www.mail2forum.com)

Good call randy.. I don't know redstone to sell anything smaller than a 16 but they also sell 22oz. I question how well blue protects beer..with mead its not such as issue.
Sent from my U.S. Cellular® Android phone

carrisr <brew-equipment@crbeernuts.org> wrote:

Are these 16oz?

On Wednesday 27 July 2011 9:06:37 am you wrote:

I have a friend here at work whose wife loves a meadery out of colorado.
So every couple of months he gives me a jingle asking if I would like some
blue colored grolsch bottles. I have collected quite a few of these so I
don't need any, however, thought I would post and see if any of you do.

He is charging $5 for 6 of them.

Just reply here if interested.

------------------------
Randy Carris
Trouble Brewing

Post generated using Mail2Forum (http://www.mail2forum.com)

I would think they are 16 oz, pretty sure their not 22's because of the shpae of the bottle, has a fat lower section with a tall skinny neck. However, I will look into it and report back, I have several at home that I could check the size on.

Personally, I wouldn't use blue bottles for beer. and here's why. It's UV light that skunks beer. UV light is on the same side of the light spectrum as blue, (just off the visible scale). Since blue glass permits the passage of blue light, I would assume that it doesn't filter UV light. I could be way off base here, but that's my personal inference.

kjball wrote:Personally, I wouldn't use blue bottles for beer. and here's why. It's UV light that skunks beer. UV light is on the same side of the light spectrum as blue, (just off the visible scale). Since blue glass permits the passage of blue light, I would assume that it doesn't filter UV light. I could be way off base here, but that's my personal inference.

I thought that the glass looked blue because it reflected that wavelength back to our eyes. It may mean that other wavelengths are absorbed.

John, That thought crossed my mind too. And I'm not convinced I'm right here, I'm more interested in getting the right answer than convincing anyone that I'm right. But here was my thought process of how I got to my conclusion. If you look into a blue bottle or shine a white light through blue glass, the light being transmitted to the other side is blue (the inside of the bottle). So I think you're right that the blue glass absorbs other wavelengths of light, but it doesn't absorb blue. Therefore, it both reflects and allows the transmission of blue. This could all be a moot point since we're really not concerned about blue light, but rather UV light. Anyway, discuss.

Kent is on the right track with his explanation. The colors we see from objects are the result of what colors they filter out or reflect. In the case of glass, we see blue or brown or green through it because those colors are not absorbed, while the other colors are. Same thing with relected light. Green paint absorbs other colors, so what gets reflected back is green. Black paint absorbs nearly all wavelengths, which is why black sufaces get much hotter in the sun that white ones which reflect nearly all wavelengths.

In the case of bottles, it's well known that blue or green bottles do not block UV, and other wavelengths that cause skunking, nearly as well as amber bottles. It's one of the reasons cans are so good. It's also one of the reasons imported beer tastes so skunky as they keep using those "pretty" bottles.

However, if you store you bottles in the fridge or dark cellar than the blue bottles should be fine.

On Monday 01 August 2011 5:54:30 pm you wrote:

John, That thought crossed my mind too. And I'm not convinced I'm right
here, I'm more interested in getting the right answer than convincing
anyone that I'm right. But here was my thought process of how I got to my
conclusion. If you look into a blue bottle or shine a white light through
blue glass, the light being transmitted to the other side is blue (the
inside of the bottle). So I think you're right that the blue glass absorbs
other wavelengths of light, but it doesn't absorb blue. Therefore, it both
reflects and allows the transmission of blue. This could all be a moot
point since we're really not concerned about blue light, but rather UV
light. Anyway, discuss.

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Kent is right, now that is why I specifically post mead bottles, you can use them for meads or ciders without any worry as they do not skunk it is the hops in beer that casues it to skunk something that meads and ciders do not suffer from, which is the only thing I use the blue bottles for. Especially for meads that I want to age out (if I can ever prodcue one good enough to age out).

Or in this case, since Mead was in them.. I like to use them for Meads and ciders with no immediate light issues! Also when your in boulder buying Redstone mead, which is where these bottles are from as I take it.. buy the mead from the liquor store and not the meadery.. its cheaper!




From: carrisr [mailto:brew-equipment@crbeernuts.org]
Sent: Monday, August 01, 2011 7:10 PM
To: brew-equipment@crbeernuts.org
Subject: Re: Blue grolsch mead bottles


Kent is on the right track with his explanation. The colors we see from objects are the result of what colors they filter out or reflect. In the case of glass, we see blue or brown or green through it because those colors are not absorbed, while the other colors are. Same thing with relected light. Green paint absorbs other colors, so what gets reflected back is green. Black paint absorbs nearly all wavelengths, which is why black sufaces get much hotter in the sun that white ones which reflect nearly all wavelengths.

In the case of bottles, it's well known that blue or green bottles do not block UV, and other wavelengths that cause skunking, nearly as well as amber bottles. It's one of the reasons cans are so good. It's also one of the reasons imported beer tastes so skunky as they keep using those "pretty" bottles.

However, if you store you bottles in the fridge or dark cellar than the blue bottles should be fine.

On Monday 01 August 2011 5:54:30 pm you wrote:
:
John, That thought crossed my mind too. And I'm not convinced I'm right
here, I'm more interested in getting the right answer than convincing
anyone that I'm right. But here was my thought process of how I got to my
conclusion. If you look into a blue bottle or shine a white light through
blue glass, the light being transmitted to the other side is blue (the
inside of the bottle). So I think you're right that the blue glass absorbs
other wavelengths of light, but it doesn't absorb blue. Therefore, it both
reflects and allows the transmission of blue. This could all be a moot
point since we're really not concerned about blue light, but rather UV
light. Anyway, discuss.









Randy Carris
Trouble Brewing

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