Capillary-Type Viscometer

Abstract

A capillary-type viscometer for the study of solutions containing volatile solvents has been designed and tested. Because the solution need not be transferred from the container in which it is prepared, measurements made with this viscometer on concentrated solutions of large molecules, such as those of nitrocelluloses, in volatile solvents are more reproducible than those made with an Ostwald-type capillary viscometer. Because of the small volume of the new viscometer, vis-