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steve_g
on Jan 28, 2020
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PFAS “Forever Chemicals” and Nordic Ski Wax
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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A ug is 10E-6 grams, a liter is about 10E+3 grams.