[Dependence of the 14C label determination efficiency in proteins under certain experimental conditions]

A simple, economical, highly productive and easily reproducible method is suggested for making 14C-labelled preparations of denaturated proteins to determine their radioactivity by the liquid scintillation counter. The advantages of the methods are as follows: it is possible for a short period of time to make a large number of preparations; the counted vessels are not contaminated during the work; scintillation liquid consumption is considerably reduced.