Standard Indonesia Rubber

The move away from visual grading to technical specifications originated in Indonesia in the 1960s with the "Standard Indonesian Rubber" ( SIR ) scheme. This prompted producersin other countries (notably, Malaysiaand Thailand)to develop similar technical specifications for grades. "Technically Specified Rubbers" (TSR) - that is, rubbers graded on the basis oftechnical parameters - now account for the bulk of traded rubber. Standardisedinternational contracts for such rubber were first adopted by the InternationalRubber Association at its inaugural meeting on 24 September 1971.

Quality Grade : SIR 3 CV , SIR 3 L, SIR 3 WF, SIR 5, SIR 10, SIR 20, SIR 50.