Infrared Analysis, Inc. is a company that specializes in the measurement of gases. The company was founded in 1985 by Dr. Philip L. Hanst to promote the use of infrared absorption in gas analysis and to provide the needed hardware and software. During a 50 year career in spectroscopy, including positions with NASA and EPA, Dr. Hanst had a major role in the application of the infrared technique to atmospheric analysis. Using infrared spectroscopy, he and Dr. E. R. Stephens helped explain the chemistry of the urban “smog” and discovered the important family of peroxy nitrate air pollutants. Dr. Hanst was the discoverer of carbonyl sulfide in the atmosphere and identified it as the principal sulfur-carrying atmospheric molecule. For a number of years he was also involved in pollution measurement from satellites and in the study of the stratospheric ozone depletion.


The hardware and software sold by Infrared Analysis, Inc. have been developed from this 50 years of experience. In the past 15 years, especially, Infrared Analysis, Inc. has had the benefit of working with more than a thousand customers at many of the world’s major universities, research institutes and commercial enterprises. That experience has been applied in optimizing the design of the products offered in this catalog. Long path cell designs have been developed that are simple, reliable and fully effective, while keeping prices low. An unmatched database of digitized reference spectra has been developed, along with computer programs for automatic quantitative analysis that can handle the most difficult of gas analysis problems.


The gas analysis systems that we recommend consist of three main components:

                        (1) A Fourier transform infrared spectrometer.

                        (2) A multiple-pass long path absorption cell.

                        (3) The needed quantitative analysis software.




Ambient air pollution measurements

Stack gas analysis

Engine exhaust analysis

Release of pollutants in painting. 

Studies in photochemistry and kinetics

Analyzing gases for semi-conductor industry

Monitoring industrial chemical processes

Measuring air quality in the work place

Analyzing effluents in chromatography

Analyzing gases from materials pyrolysis

Measuring trace impurities in reagent gas

Measuring volatile pollutants in soil and water

Studies on greenhouse and ozone effects


Technical details of our gas measurement technique are discussed in our book entitled Procedures in Infrared Analysis of Gases

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