PPM related problem - Random question

3. Percent, Ratio, mg/mL, PPM, PPB 3.4) PPM and PPB 3.4.1) PPM, PPB - General Drug weight from PPM and total Weight Hard 1

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The potency of a preparation is 107.8 PPM. How many kilograms will this preparation weigh, if it contains 1832.6 mg of a drug?

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lb equals 17 Kg kg

    PPM is the number of grams present per 1 million (1,000,000) grams of the preparation or solution or mixture.
    107.8 PPM means, there is 107.8 g of drug present in each million (1,000,000) g of the preparation.
    Weight of drug = 1832.6 mg.
    Converting it to grams `=1832.6/1000=1.8326` g.
    Therefore, we can write:
    `(107.8 \quad g)/(1,000,000\quad g)=(1.8326\quad g)/x therefore x = 17000` g.
    Converting g into Kg:
    `=17000/1000=17` Kg. Ans.