Carefully disperse the "Carbopol" 934 in the watr to a thin cloudy dispersion without lumps. Allow entrapped air to escape and then add the eucalyptol, methyl salicylate and dwarf pine needle oil with good mixing. dissolve the ephedrine alkaloid in the alcohol and gradually add this to the dispersion with constant stirring. Sterilization is effected by autoclaving at 121.2'C and a gauge pressure of 15.3 psi for 15 minutes.
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