Happiness is a Class II Spectrum

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In 1967, the Coblentz Society and the American Society for Testing Materials jointly initiated a pilot project to generate a limited number of research quality (class II) infrared reference spectra. Six infrared laboratories participated, each producing 25 spectra from samples selected from a group of 57 authentically pure chemical compounds. Three of the compounds were run by all laboratories in order to provide a basis for comparison and evaluation. This paper reports the results of the project. Points covered include a discussion of why class II spectra are important to the future of infrared spectroscopy; some of the difficulties encountered by the participating laboratories and ways of overcoming these difficulties; and a critical comparison of spectra from the same compounds produced on different spectrometers and under different sampling conditions.

Keywords: Evaluated spectra; Infrared spectroscopy; Sample preparation for infrared spectra; Spectrum retrieval

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370272774352308

Affiliations: 1: Dow Corning Corporation, Midland, Michigan 48640 2: The Dow Chemical Company, Midland, Michigan 48640

Publication date: March 1, 1972

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