The addition of carbon black to an elastomer can have a positive effect upon its mechanical, electrical and physical properties. Therefore, QC and process labs need to determine the exact concentration of carbon to ensure product quality and monitor production costs. A rapid determination of the carbon black content allows quick feedback to production and for adjustment when required. A standard approach to this analysis is ASTM D1603, which provides gravimetrical determination of carbon black content following a lengthy pyrolysis step under nitrogen.