BS ISO 1431-3. Rubber, vulcanized or thermoplastic. Resistance to ozone cracking. Part 3. Reference & alternative methods for determining the ozone concentration in laboratory test chambers Rubber, Plastics & rubber technology, Vulcanized rubber, Thermoplastic polymers, Ozone, Cracking, Concentration (chemical), Determination of content, Laboratory equipment, Calibration, Electrochemical methods, Chemical analysis & testing, Chemical-resistance tests, Gas analysis