Tragacanth/0.5 Oil Lavender/0.25 Algin/2 Glycerin/30 "Nupercaine" HCl/2 Distilled Water to make/100 Boric Acid/3
配制方法:
Dissolve the boric acid in water with the aid of heat; add the "Nupercaine" HCl. Mix the tragacanth and algin in the mortar with the glycerin. Add the "Nupercaine"-boric acid solution. Let stand for a few hours and add the oil of lavender.