Cel-Span 310 is an antioxidant concentrate for use in HDPE & LLDPE blends to provide thermal stabilization to polymers during processing. Thermal stabilization can help the polymer maintain physical properties and molecular weight that may be degraded during exposure to processing temperatures. a mixtures of 1.0 - 2.0% is sufficient to protect the polymer during processing, and a mixture of 5 - 10% makes it suitable for use as a shut down material that can be left in the barrel to help keep the process equipment clean and free of black specs or other degradation.