Gas analysis

Gas analysis may refer to:


 * Blood gas analysis, a method that measures arterial oxygen tension, carbon dioxide tension, and other aspects of a blood sample
 * Breath gas analysis, a non-invasive method that measures volatile organic compounds present in the exhaled breath
 * Dissolved gas analysis, a method that measures dissolved gases in insulating fluids
 * Evolved gas analysis, a method that measures the gas evolved from a heated sample that undergoes decomposition or desorption
 * Breathing gas analysis, especially for breathing gas mixtures
 * Trace gas analysis, as an application of mass spectrometry, ion-mobility spectrometry or a combination of the two methods

Gas analyzer may refer to:
 * Infrared gas analyzer
 * Residual gas analyzer
 * Orsat gas analyser
 * Thermal and Evolved Gas Analyzer, a scientific instrument aboard the Phoenix spacecraft
 * Helium analyzer, an instrument to measure the concentration of helium in a gas mixture
 * Electro-galvanic oxygen sensor, an device which consumes a fuel to produce an electrical output by a chemical reaction