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From: ACTSNYC**At_Symbol_Here**CS.COM
Subject: Re: Eye protection for working w/borosilicate glass
Date: Dec 21, 2011 23:00 UTC
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DCHAS-L
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There's almost no UV coming off. Instead it is IR and some sodium flare yellow. There are weldingshades # 1 and # 2 that he might not find too dark.
Monona
In a message dated 12/21/2011 3:58:25 PM Eastern Standard Time, secretary**At_Symbol_Here**DCHAS.ORG writes:
From: phil_mckittrick**At_Symbol_Here**yahoo.com
One of our labs uses sealed borosilicate glass tubes for some experiments. A tech seals several dozen of the tubes with a torch (I know he is using oxygen, I think the fuel is propane, I know it is not acetylene) at onetime. He was complaining about the brightness of the light, so is now wearing safety sunglasses that block 99+% UV.
Anyone have experience with something similar to this? I have seen the didymium glasses that hobbyists use for glass blowing, but I am not surewhat eye protection to provide. He has tried welders goggles, but found them too dark.
Thanks,
Phil McKittrick
Nalco Company