Abstract

If, under this heading, we restrict our selection to laboratories maintained by industrial or commercial concerns for the regular, systematic use of spectrochemical emission analysis for the inspection of materials and or the control of composition and quality during production, there can be no question that our choice will be that of the American Brass Company at Waterbury, Connecticut. There, in 1913 or 1914, "Charlie" Davis, with the encourage and backing of his chief, W. H. Bassett, set up a large Littrow quartz spectrograph to check the purity of the copper and zinc that went into their products and to search out the reasons for variations in their properties that could not be accounted for by ordinary chemical analysis.

Technical Note: Industrial Research Laboratories of the United States

J. Opt. Soc. Am. 46(8) 664_1-664 (1956)

Designs of Photometer Units for Infrared Spectrographs

R. A. Oetjen and L. C. Roess
J. Opt. Soc. Am. 41(3) 203-208 (1951)

A Stigmatic Grating Spectrograph for Industrial Laboratories*

Richard F. Jarrell
J. Opt. Soc. Am. 32(11) 666-669 (1942)

Spectrographic Determination of Trace Elements in 70/30 Brass and Admiralty Brass. Part I*

P. A. Leichtle
J. Opt. Soc. Am. 34(8) 454-463 (1944)

Wide Range Analysis for Zinc Using Spectrographic Line Widths

E. John Eastmond and Bernice E. Williams
J. Opt. Soc. Am. 38(9) 800-803 (1948)