The calculations required for two-wavelength measurements are time consuming and laborious. In order to circumvent this limitation of the method, a set of tables which combined four operations into one has been designed and is reproduced within. The tables are based on Patau's formulae. The two transmission readings obtained according to the photometric method provide the coordinates which lead directly to a value for the relative absorbance. The product of this absorbance and the area of the photometric field gives the relative amount of chromophore in the field. The range of transmission values covered in the table corresponds to the effective range of the two-wavelength method.
The Two-Wavelength Method of Microspectrophotometry : II. A Set of Tables to Facilitate the Calculations
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Mortimer L. Mendelsohn; The Two-Wavelength Method of Microspectrophotometry : II. A Set of Tables to Facilitate the Calculations . J Biophys and Biochem Cytol 25 July 1958; 4 (4): 415–424. doi: https://doi.org/10.1083/jcb.4.4.415
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