Division 4.8.1
The test shall be in compliance with ISO 1431-1. The test piece, which shall be stressed to 20 per cent elongation, shall be exposed to air at + 40 °C with an ozone concentration of 50 parts per hundred million during 120 hours.
The test shall be in compliance with ISO 1431-1. The test piece, which shall be stressed to 20 per cent elongation, shall be exposed to air at + 40 °C with an ozone concentration of 50 parts per hundred million during 120 hours.