An improved cooling curve technique as applied to waxes

A cooling curve set-up is described which by means of a combination of ther mal isolation methods allows very long timescale experiments, up to about 2 4 h over 100 K to room temperature. This allows the study of materials whic h crystallize poorly, if at all, at greater rates of cooling. Plotting firs t-difference of temperature versus temperature for fixed interval data give s a very high resolution of events with great sensitivity. The application of the method to waxes is illustrated.