United States Department of the Interior, Stewart L. Udall, Secretary 



Fish and Wildlife Service, Clarence F. Pautzke, Commissioner 



Bureau of Commercial Fisheries, Donald L. McKernan, Director 



A MODIFIED BECKMAN 



MODEL DU SPECTROPHOTOMETER 



FOR SEAGOING USE 



By 

 Robert W. Holmes and Robert J. Linn 



University of California 



Scripps Institution of Oceanography 



La Jolla, California 



Contribution from Scripps Institution of Oceanography 



United States Fish and Wildlife Service 

 Special Scientific Report- -Fisheries No. 382 



Washington, D. C. 

 July 1961 



