How much ppm dilution is prepared when 10mg of drug dissolved in 100ml of water?
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1 ppm is 1 part per million
ie . 1ppm =1/1000000
10mg = 0.01 ml
that implies , 0.01/100
make the denominator million
therefore ;multiply numerator and denominator by 10000
so the answer is 100 ppm
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