How can I prepare 4000 ppm 100 ml solution from 99.8% of Methanol?

I have to prepare a 4000 ppm 100 ml solution from 99.8% of Methanol. Since density of methanol is 0.792. Do I have to multiply it to 10^6 to get the ppm of 99.8% methanol? I am confused about that.

15 July 2022 9,984 1 View