Testing

Testing of plastics in compliance with current standards

Lab test
Certification

OIT measurements

In our laboratory, we can carry out measurements completely independently on test pieces made of plastic products and plastic compounds. Our laboratory facilities include a DSC device for determining OIT, transition temperatures, melting and crystallization phenomena. As part of a regular quality control or part of a (residual) lifetime study on PE (polyethylene) products, we can carry out the OIT measurement in accordance with NEN-EN-ISO 11357-6 entirely in-house and under accreditation.

Why choose Normec ?

  • Rely on years of experience and expertise.

  • Schedule inspections, tests and training flexibly.

  • From testing to certification; you are 100% taken care of.

  • Normec is your expert partner with an active involvement in standardisation.

What does OIT stand for?

The abbreviation OIT stands for oxidation induction time. An OIT measurement is a standardized test in which the time to oxidation at a constant temperature in the oxygen environment is determined on the basis of the heat released during oxidationreaction. DSC (differential scanning calorimetry) is a method to accurately perform a differential heat measurement per unit of time. The oxidation of PE material starts after the thermal stabilizer has been consumed. The period between switching from nitrogen environment to oxygen environment and the start of oxidation at the constant temperature, standard 200 °C, is the OIT value and is calculated from the DSC measurement curve.

Use of OIT

An OIT measurement is carried out in our laboratory mainly on PE products such as tubes and geomembranes to determine (remaining) resistance to oxidation. In combination with exposure in water and air at elevated temperature, the measurement is used in other areas to determine the (residual) service life; for example, for validation of one hundred years. The OIT measurement gives a quick indication of the remaining stabilization against oxidation.

Curious what we can do for your company?

Get in contact with our experts
contact

These services might also be of interest to you.

Leading companies in this service

Do you want to create a safe and healthy working and living environment?

We test, inspect and certify, enabling organisations to innovate safely, quickly, efficiently and cost-effectively.
Get in touch