Polystyrene. Impact grades of polystyrene (PS) that have been copolymerized with minor amounts of butadiene are injection or blow moulded into trays or cases for medical products. PS is also formed into rigid medical devices, such as drainage monitoring units, shown in Fig. Because of its cyclic backbone, PS neither cross-links nor degrades when exposed to sterilizing radiation. Care, however, must be taken not to overexpose this resin since some yellowing could result.
Polystyrene. For all products in the product group – polystyrene, the following evidence must be provided by the Supplier: Technical data sheet Batch test certificate with each delivery
Polystyrene. The board shall be formed of polystyrene base resin in an extrusion process and shall be homogeneous and essentially unicellular. It shall conform to the requirements of ASTM 11230. SECTION 3 - TESTING ARTICLE NO INDEX 3.1 GENERAL 3.2 TESTS
