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  #1  
Old 11-06-2017, 10:58 AM
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James Lallande
 
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We had an interesting observation in class last week. DeRanke XX Bitter is in a green bottle but wrapped in paper. I was surprised to see the beer heavily skunked. The paper was not much thicker than tissue wrapping paper and white, I assume the paper was not thick enough or because it was white then the UV rays still got through. Anyone else buy this beer and see have same issue. The base beer was really nice
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Old 11-06-2017, 11:55 AM
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Somewhere in the boxes I have left from moving, I have a UV meter. It would be interesting to take different types of glass, and also this paper, and see what it does in terms of UV reduction. I will try to dig it out.
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Old 11-06-2017, 04:05 PM
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That would be a cool meeting demo.
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Old 11-09-2017, 04:35 PM
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My previous career before alcohol, was art and framing. We used UV conservation glass to protect valuable art and the materials to frame it. Light is just as damaging to paper as beer. Fades the colors, degrades the paper. So I'd imagine it doesn't block very well either. And cheap paper, like newsprint and cardboard and other basic papers, degrade even faster.
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