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A comment on PFAS “Forever Chemicals” and Nordic Ski Wax. Parent comment

Re:PFAS “Forever Chemicals” and Nordic Ski Wax by steve_g on Tuesday January 28, 2020 @06:55AM (#22168528)
I think 2.1 ug/l is 2100 parts per trillion (where "trillion" means 10E+12)

A ug is 10E-6 grams, a liter is about 10E+3 grams.

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