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Appl Environ Microbiol. 1968 February; 16(2): 212-215
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

New Turbidimetric Device for Measuring Cell Concentrations in Thick Microbial Suspensions

Teruyuki Fujita and Kazuko Nunomura

The Institute of Applied Microbiology, University of Tokyo, Tokyo, Japan

ABSTRACT

A photoelectric turbidimeter is described for use in measuring cell concentrations in thick suspensions. Its sample cuvette provides a path length continuously adjustable between 0.01 and 20.00 mm. By reducing the path length, it is possible to measure the optical density in thick cell suspensions without dilution. Moreover, the method described is rapid and simple, and only small amounts (less than 1 ml) of cell suspensions are required. The method is applicable to cell concentrations ranging up to 109/ml for yeast.

Appl Environ Microbiol. 1968 February; 16(2): 212-215
Copyright © 1968 American Society for Microbiology. All Rights Reserved.





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