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### Topic: ppm into bars  (Read 28246 times)

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#### ziagemini

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##### ppm into bars
« on: June 13, 2012, 03:46:22 AM »
Hello All,

i am not really sure whether i am putting the question at right place. In my gas there are 250ppm of hydrogen sulfide. Can i convert this ppm into bar. As far as i rememnber ppm is unit showing mass of H2S in gas.

Hope i get some help.

Regards!

#### sjb

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##### Re: ppm into bars
« Reply #1 on: June 13, 2012, 05:38:25 AM »
Hello All,

i am not really sure whether i am putting the question at right place. In my gas there are 250ppm of hydrogen sulfide. Can i convert this ppm into bar. As far as i rememnber ppm is unit showing mass of H2S in gas.

Hope i get some help.

Regards!

Dalton's law of partial pressures?

#### Stepan

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##### Re: ppm into bars
« Reply #2 on: June 13, 2012, 06:24:34 AM »
In gases, ppm usually implies fraction by volume. 250 ppm is equivalent to P=250(ppm)/1,000,000(ppm)*1(bar)=0.00025bar