Saltsyre og natriumhydroxid kan være tilsat for at justere pH til 7, 0- 7, 8.
Protamine sulphate m-cresol [1.76 mg/ ml] Phenol [0.80 mg/ ml] Glycerol Dibasic sodium phosphate.7H2O Zinc oxide Water for injections Hydrochloric acid and sodium hydroxide may be used to adjust pH to 7.0 – 7.8.