A person from the process engineering department has come to the instrument analysis area to ask a question
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I’d like to ask everyone for advice: for example, if a laboratory testing instrument shows that the hydrogen sulfide content in liquefied gas is 2000 mg/m3, is the unit mg/m3 based on standard conditions (20°C, 101.325 kPa)? Because under standard conditions, I can determine the ppm value by checking the density
If the unit for expressing the volume of the gas sample is not specified, the values obtained for the composition of the gas sample are dependent on pressure and temperature. Generally, for analyzers, when determining a certain component in a gas sample, the unit should be specified when expressing the measurement value. Based on my experience, when expressing gas samples, the volume should be at standard conditions or some specified condition.
As long as the density of liquefied gas under standard conditions is determined, divide 2000 mg by that density and then multiply the result by one million.
2000mg/m³ is the value obtained through laboratory testing. I just want to know whether this result indicates a normal condition; are there anyone who works with instruments?