4 ms·
> Not to forget the lead piping still widely spread in the US. As well as the lead-free pipes in the U.S., which contain up to 8% lead.
by Alex3917 8y ago
> Not to forget the lead piping still widely spread in the US.
As well as the lead-free pipes in the U.S., which contain up to 8% lead.
- vilhelm_s 8y agolol! But apparently it was reduced in 2011: > In 2011 Congress passed the Reduction of Lead in Drinking Water Act (RLDWA) revising the definition of lead free by lowering the maximum lead content of the wetted surfaces of plumbing products (such as pipes, pipe fittings, plumbing fittings and fixtures) from 8% to a weighted average of 0.25% [https://www.epa.gov/dwstandardsregulations/use-lead-free-pipes-fittings-fixtures-solder-and-flux-drinking-water https://www.epa.gov/dwstandardsregulations/use-lead-free-pip...]
- Alex3917 8y agoGiven the median water pipes in many cities are 75+ years old, it's going to take a pretty long time for the new regulation to have much effect.
- asasidh 8y agolead-free means lead comes free.
- 8bitsrule 8y agoFor a long time thorium oxide (99 percent ThO₂ and 1% cerium(IV) oxide) was used to make some mantles in portable camping lanterns. https://en.wikipedia.org/wiki/Gas_mantle#Safety_concerns https://en.wikipedia.org/wiki/Gas_mantle#Safety_concerns I remember as a kid wondering how that mantle - which looked like cloth - could glow without disintegrating. Worse yet - break one of those mantles, then breathe in a particle ... EDIT: Looks like Coleman switched to Yttrium...