Data are reported on the development of a Cherenkov photometric producere, applying the basic principle of the method of LOWRY
et al. At various amplifications and channel settings, linear correlations may be obtained between the logarithm of the protein
content and the external standard activity or the channel ratio. The values obtained by Cherenkov spectrophotometry based
on the Filin method display a linear correlation with each other with a good correlation coefficient.