cobalt

[Danno]

http://www.harnesslink.com/USA/India...w-cobalt-rules

Good read.
Any one know how much 25 parts per billion (ppb) is??

Not sure if the ppb bit is right trish, the current level in NSW is 200mg/litre which is 200 ppm, which would be equivalent to 200,000 ppb?

something not right there,

cheers,
Dan