ISO standards free download ISO 1431-1:2012 pdf download – Rubber, vulcanized or thermoplastic – Resistance to ozone cracking ISO 1431-1:2012 pdf download - Rubber, vulcanized or thermoplastic - Resistance to ozone cracking 5.3 Means of adjusting the ozone concentration When an ultra-violet lamp is used, the ozone concentration can be controlled by adjusting either the... 03-01 Read More