Abstract: The invention relates to a composite dispenser for materials in paste form which are intended to be admixed with a diluent prior to use, comprising a flexible container consisting of a lower material-containing section and of an upper section forming an open receptacle when separated from the lower section by a perforable wall whereby, after perforation, application of pressure upon the lower section will cause a controlled quantity of the material contained therein to be dispensed through the perforation into the upper receptacle for admixture in situ with a suitable diluent.