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A comment on Nontoxic powder uses sunlight to quickly disinfect contaminated drinking water. Parent comment

Re:Nontoxic powder uses sunlight to quickly disinfect contam... by strken on Saturday May 20, 2023 @02:42AM (#36009873)
I was confused by this because I thought glass blocked UV, but apparently it lets UV-A through and only blocks UV-B and UV-C: https://hps.org/publicinformation/ate/q12082.html

I also found a study that suggests UV-A might not be effective against viruses (although at a guess they're not a common contaminant in drinking water compared to bacteria): https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8701782/

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Re:Nontoxic powder uses sunlight to quickly disinfect contam... by Qweiuu on Saturday May 20, 2023 @03:13AM (#36009994)
As far as I know it's plastic bottle not glass bottle.
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Re:Nontoxic powder uses sunlight to quickly disinfect contam... by hutzlibu on Saturday May 20, 2023 @03:48AM (#36010137)
Borosilicate glass does let UV-B pass.

https://en.m.wikipedia.org/wiki/Borosilicate_glass

Quite a bit more expensive, though. And even better would be pure SiO2, fused quartz/silica.

https://en.m.wikipedia.org/wiki/Fused_quartz

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