What is 900ppm?
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This post was last edited by sxf1028102800 on 2017-10-26 at 15:50. Today, gas composition analysis was conducted on the device: hydrogen makes up 24%, methane 25%, and hydrogen sulfide is at 900 ppm. I’m not sure what 900 ppm actually means Could everyone tell me roughly how many mg/m3 it is? Points for answers!
ppm stands for parts per million, and it should refer to the volume fraction.
The ppm unit represents one part per million; 1 ppm is equivalent to 1 ug/mL. 900ppm is equivalent to 0.09%.
1366 mg/m3 under standard conditions
Approximately 1.5 mg/m3
PPM level refers to 10 to the power of -6; 1 ppm means 0.0001%, while 900 ppm means 0.09%