### Determine weight of total content from PPM from the weight of the drug

3. Percent, Ratio, mg/mL, PPM, PPB 3.4) PPM and PPB 3.4.1) PPM, PPB - General

3.4.1.1) Drug weight from PPM and total Weight Easy 1

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How many grams will a solution weigh, if it contains 0.5291 g of a drug? The label claims 40.7 PPM.

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lb equals 13000 g kg

PPM is the number of grams present per 1 million (1,000,000) grams of the preparation or solution or mixture.
40.7 PPM means, there is 40.7 g of drug present in each million (1,000,000) g of the preparation.
Weight of drug = 0.5291 g.
Therefore, we can write:
(40.7 \quad g)/(1,000,000\quad g)=(0.5291\quad g)/x therefore x = 13000 g. Ans.

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