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When using visual methods of estimation for semi-quantitative analysis, the intensities of the analytical lines are generally compared with a series of lines of standard intensity (1-3). It has been found in this laboratory that the use of a translucent screen simplified the intensity
comparison, but that the use of double projectors having two projection lamps, was a distinct disadvantage (4).
National Physical Research Laboratory, Council for Scientific and Industrial Research, Pretoria, South Africa
Publication date: March 1, 1965
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)