DETERMINATION OF OXYGEN INDUCTION TIME: (OIT) (TS EN ISO 11357-6)

It is a test method that examines the deterioration in the long-term performance of the polymer structure of polyethylene pipes and fittings. OIT test gives the time for the welded polyethylene pipe fittings to degrade over time under outdoor conditions. It is an indicator of how well it stabilizes in the long term. It is determined as the time until the beginning of exothermic oxidation in pure oxygen and pure nitrogen gases at a certain temperature. Generally, the minimum time at 210 ° C is 20 minutes in polyethylene materials.