Standardization of C¹⁴ stock solution and filter efficiency in the comparison of primary productivity measurements

Abstract

Parallel experiments using natural populations were conducted to find out the variability of values of organic production obtained by two different C¹⁴ stock solutions, standardization techniques and counting systems as well as the relative efficiency of three types of filters. The results indicate that a uniform method of standardization of stock solution and a careful selection of filters are necessary more than anything else if values of organic production obtained by different workers are to be compared.