scope:

1.1 This practice covers specific procedures and test conditions that are applicable for exposure of plastics in enclosed carbon-arc devices conducted in accordance with Practices G151 and G153. This practice also covers the preparation of test specimens, the test conditions suited for plastics, and the evaluation of test results.

Note 1-Enclosed carbon-arc exposures are described in Practice G23, which described very specific equipment designs. Practice G23 is being replaced by Practice G151, which describes performance criteria for all exposure devices that use laboratory light sources, and by Practice G153, which gives requirements for exposing nonmetallic materials in enclosed carbon-arc devices. Practice G23 will be balloted for withdrawal before December 2000.

1.2 This practice does not cover filtered open-flame carbon-arc exposures of plastics, which are covered in Practice D1499. Practice D5031 describes enclosed carbon-arc exposure of paints and related coatings.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Note 2-This practice is not equivalent to any ISO practice for laboratory accelerated exposures of plastics.