00471nam a2200097Ia 4500008004100000245025900041260000900300500003600309650000900345650001900354220217s9999    xx            000 0 und d 0aMethods 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 vulcanizing of rubber in a standard compound. (First Revision).  c1972  aStandard number: IS 3660 Part I  aDirt  aNatural rubber