It's shorthand for Parts Per Billion. Units used to express contamination reports, such as establishing the amount of a contaminant in the water, land or air.
01:34, 27 November 2012
Absorbed through the leaves of the plant, and ...
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Share a term with millions of users around the world and ...
Potash is the only source of potassium fertilizer; there ...
A compilation of information required under the OSHA ...
MSDS: Material safety data sheet (MSDS) is a form ...
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