Parts per billion ("ppb") denotes one particle of a given substance for every 999,999,999 other particles. This is roughly equivalent to one drop of ink in a lane of a public swimming pool, or one second per 32 years. One part in 109.
"The percentage of truck tankers found positive in 1994 (National Milk
Drug Residue Third Party Data Base) was 0.063 percent." (scroll down to view tolerable levels of antibiotics)
Is the medicine worse than the cure?, ie is 0.063% positive milk worse than using no drugs at all?
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2 comments:
The last sentence in the first paragraph should read:
One part in 10superscript9
Oh that explains it :) (?)
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