An Oxidation Induction Time (OIT) tester is a Differential Scanning Calorimeter (DSC) or specialized thermal analysis instrument that measures the stability of materials (polymers, plastics, oils) against oxidative decomposition. Differential Scanning Calorimeter DSC is designed to determine the inner heat transition relating to temperature and heat flow, it is widely used in the field of polymer development, performance testing & quality control. DSC research and development includes the following field: glass transition temperature, melting point, cold crystallization, crystallization, phase transition, Enthalpy, oxidation induction time (OIT).

Application

It is used to determine the time of automatic catalytic oxidation of the sample at room temperature hydrogen, and to evaluate the thermal stability of the sample. It is suitable for plastics and rubber materials.

Standard

GB/T17391-1998: Polyolefin pipe systems for the conveyance of fluids under pressure – Test methods for the resistance to internal pressure

ISO/TR10837:1991: Technical Report on the use of plastics pipes and fittings for the conveyance of drinking water – Guidelines for the selection of materials and components

ASTM D3895-1998: Standard Test Method for Oxidative Induction Time of Polyolefins by Differential Scanning Calorimetry (DSC)

ASTM E 967: Standard Practice for Temperature Calibration of Thermocouples and Thermocouple Materials by Comparison Techniques

ASTM E 968: Standard Practice for Thermal Cycling of Electronic Components and Materials for Temperature Stress Screening

ASTM E 793: Standard Test Method for Measuring Surface Discontinuities on Metal Surfaces by Electromagnetic (Eddy-Current) Method

ASTM D 3895: Standard Test Method for Oxidative Induction Time of Polyolefins by Differential Scanning Calorimetry (DSC)

ASTM D 3417: Standard Test Method for Thermogravimetric Analysis (TGA) of Polymers

ASTM D 3418: Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry (DSC)

ISO 11357-6:  Plastics – Differential scanning calorimetry (DSC) – Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)

EN 728: Thermal insulating products for building applications – Determination of water vapour transmission properties

Parameters

Features

The instrument has stable performance, high measurement accuracy and good repeatability;

Designed for measuring oxidation induction period in plastics and rubber industry:

* Integrated design, temperature control and furnace device are integrated, reducing signal loss and interference, beautiful and exquisite appearance;

The furnace body adopts the upper cover structure, no need to lift, convenient loading sample;

* High-resolution data acquisition system, real-time data acquisition;

Intelligent adaptive single-chip microprocessor temperature control system, temperature control speed, high precision:

* Perfect two-way air valve control system, using the original imported flow valve from the United States, can realize the automatic switching of ammonia to oxygen during the measurement process;

Professional oxidation induction period test software with automatic temperature correction and automatic test program to automatically calibrate temperature, test oxidation induction time and plot curves:

Simple operation method, to achieve one-click testing, test results can be saved and printed:

Computer real-time display instrument status, test data and curves, easy to view.

Accessoriess

1. Main unit: 1 set

2. Standard indium sample: 0.5g

3. Standard tin sample: 0.5g

4. Aluminum crucibles: 200 pieces

5. Software USB drive: 1 piece

6. Pressure reducing valves: 2 pieces

7. Power cord: 1 piece

8. Communication cable: 1 piece

9. Gas tubes: 3 pieces

10. Gas tube connectors: 2 pieces

11. Tweezers: 1 piece

12. Sampling spoon: 1 piece

13. Fuses: 4 pieces

14. Computer (provided by the customer): 1 set

15. Printer (provided by the customer): 1 set

16. Product packing list: 1 copy

17. Product manual: 1 copy

18. Product certificate of conformity: 1 copy

FAQ

1. What is an Oxidation Induction Phase Analysis (OIPA) Tester?

The OIPA Tester is a device used to evaluate the thermal oxidative stability of polymers, rubbers, and other materials by determining the time or temperature at which oxidation initiates under controlled conditions.

2. How does the OIPA test work?

The tester heats the sample in a controlled atmosphere, often oxygen or air, while monitoring chemical or physical changes. The onset of oxidation is identified by detecting changes in pressure, weight, or other indicators, providing insight into material stability.

3. What types of materials can be tested?

It can test polymers, elastomers, rubbers, plastics, and other organic materials used in automotive, aerospace, packaging, and construction industries.

4. What parameters are measured during testing?

The machine measures the oxidation induction time (OIT), onset temperature of oxidation, and phase-related changes. Some advanced models provide automatic data logging and graphical analysis of oxidation kinetics.

5. Why is oxidation induction phase analysis important?

This testing ensures that materials can withstand thermal and oxidative stresses during manufacturing, storage, and service. It helps manufacturers optimize formulations, predict lifespan, and ensure product reliability and safety.

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