In calibration of CO2 analyser, in order to establish zero calibration which of the following is used as sample?
A. Oxygen
B. Hydrogen
C. Inert gases
D. Nitrogen
Answer:C
In calibration of CO2 analyser, in order to establish zero calibration which of the following is used as sample?
A. Oxygen B. Hydrogen C. Inert gases D. Nitrogen
Explanation: In calibration of CO2 analyser, in order to establish zero calibration inert gases are used as sample. Generally, room air is also used.