KOMPOSITION MED REGLERAD FORENDRING AV OPALESCENS ELLER UPPKLARNING VID VALD TEMPERATUR, SAMT SETT FOR DESS FRAMSTELLNING

摘要

A composition having regulated occurrence of opacity and clarity at selected temperatures; method of making and using such a composition to create a temperature-indicating device by filling the composition in a suitable container of transparent material and having a background in the form of a color, a letter or a number i.e., in order to be able to visually interpret the difference between opacity and clarity. A reversible indicating device is made which can show if the upper or lower limits of a pre-set temperature interval has been exceeded or fallen below.