Abstract: There is disclosed a preservative system for natural rubber latex comprising adding an organic amine or mixture of two or more amines to the latex. Other bactericides may also be added to assist in preserving the latex. The other bactericides include TMTD and ZnO, particularly as a 1:1 dispersion. Also described is a method of improving or enhancing the stability of the latex by adding the organic amines. Advantages of using organic amines as the preservative include less fumes of ammonia being emitted, a wide range of dosages are possible, the amount of TMTD and/or ZnO in the latex can be reduced to increase the stability of the latex and to reduce the amount or carcinogenic materials in the latex.