Density titration - A simple method for the determination of density variations in glasses

Abstract

By modifying the well-known sink-float method it is possible to determine density differences in solid glasses either with a very simple procedure or in a very exact way. The density of the immersion fluid is altered in the proposed way by adding another fluid to it at constant temperature in controlled steps. It was found that tetrabromethane (TBE) and methanol is a suitable pair of fluids for this kind of measurements. A simple apparatus, the procedure and some illustrating examples of the successful use of the proposed way are described.