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Unless its quartz glass or something wouldn't it be blocking pretty much all of the UVC?
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Yes I'd wager they're soda lime and ought to filter it. In absence of knowing the material, it's a hazard that can be mitigated with cheap PPE. Everyone can make their own choice, as long as it's informed.
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Seems too inexpensive to be made of quartz to transmit the UVC. Typical glass will absorb it, possibly fluorescing a bit in the visible.
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