What does ppm mean???

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Sellami Mohamed Hassen

Hello Djilali

ppm means Part per million in French (partie par million) c'est à dire: 1g/1000000g ou 1mg/1000000mg...

Dans votre cas: 100ppm de CO veut dire: 100g de CO/1000000g de solution (ou de mélange gazeux).

Salutations.

Djilali Messaoudi

thank you very much

Sajjad Sabet

Dear Djilali

As Sellami explained, ppm is a unit for gas concentration,

thanks, problem solved.