... content, % wt, max0.03Ash content,%wt, max0.60Nitrogen content,% wt, max 0.600.60Volatile matter,% wt, max0.80Initial plasticity (po), min35Plasticity ... ), min60Colour index, max6Mooney viscosity ML (1'+4') 100°C60+/- 5CureR natural rubber SVR 3L