00504nam a2200121Ia 4500 220217s9999 xx 000 0 und d Methods of tests for natural rubber. Part I. Determination of dirt, volatile matter, ash, total copper, manganese, iron, rubber hydrocarbon, viscosity (shearing disk viscometer), and mixing and vulcanizing of rubber in a standard compound 1966 Standard number: IS 3660Part I Dirt Natural rubber ST 73740 73740 0 0 0 10 42 MAIN MAIN 2021-12-31 0 2021-12-31 00:00:00 2022-02-17 ST