200 microliters to ppm?

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200 microliters to ppm?

Postby allyz » Fri Sep 21, 2007 12:51 pm

how do i convert say 200 microliters to ppm?? what are the steps to the calculation?? anyone knows?
allyz
 

Re: 200 microliters to ppm?

Postby Guest » Sun Sep 23, 2007 11:00 pm

allyz wrote:how do i convert say 200 microliters to ppm?? what are the steps to the calculation?? anyone knows?


Dissolve it in liters of something? ppm is a ratio, parts of some substance dissolved in one million parts if solution.

Also ppm is completely ambiguous unless you specify whether is is a volume ratio, mass ratio, or mole fraction ratio. The term is therefore deprecated in the SI.
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