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Clinical Chemistry, Vol 10, 1117-1120, Copyright © 1964 by the American Association for Clinical Chemistry
1 Harper Hospital, Detroit 1, Mich.
The use of a holmium oxide calibration filter is discussed for checking wavelength, trouble-shooting, and adjusting sensitivity of spectrophotometers. Correction tables may be prepared to permit setting the instrument to true wavelength. One spectrophotometer was found to have a wavelength error large enough to impair its usefulness in direct spectrophotometric methods.
Submitted on October 29, 1963
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