PROCESS FOR IMPROVING THE STABILITY OF PPD, QT AND HISTOPLASMIN ON TINE APPLICATORS

摘要

In accordance with this invention, the stability of Old Tuberculin, Tuberculin Purified Protein Derivative (PPD) or histoplasmin coated on the tines of injectors by way of a single dip technique is greatly improved by combining said biologicals with acacia and a material selected from the group consisting of lactose, glucose and mixtures thereof.