Question

How much ppm dilution is prepared when 10mg of drug dissolved in 100ml of water?

Answer 1

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