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Oxidation induction time or OIT is a standardized test performed in a DSC ( Differential scanning Calorimeter) which measures the level of thermal stabilization of the material tested. The time between melting and the onset of decomposition in isothermal conditions is measured. The atmosphere is nitrogen up to melting and then oxygen. The typical temperature is 190-220 °C.
UT3335 Differential scanning calorimeter is one kind of thermal analysis method instrument, under controlled temperature, check the relation of temperature with the rate differential input in test sample and reference articles. The curve recorded is DSC curve, heat flow rate dH/dt is Y-axis, temperature T or time t is X-axis, can measure various kind of thermodynamics and kinetic parameter, like specific heat capacity, reaction heat, heat of transformation, phase diagram, reaction rate, cystallization rate, sample purity etc., with wide temperature range (-100~800℃), high resolutions, less sample using. Used to test inorganic material, organic compounds, pharmaceutical analysis etc., can be used to do Oxidative Induction Time test, heat stability, glass transition temperature, melting point, cold crystallization, crystallization, phase transition, etc.,
Conform to standard EN 728. ISO 11357-6, ASTM D3417.
The measuring range | 0～±500mW |
Temperature range | Room temperature ~ 800℃ |
Temperature rising rate | 1~80℃/min |
Temperature falling rate | 1 ~ 20 ℃ / min |
Temperature resolution | 0.1℃ |
Temperature 0.1 ℃ accuracy | ±0.1℃ |
Temperature repeatability | ±0.1℃ |
DSC noise | 0.01μW |
DSC resolution | 0.01μW |
DSC accuracy | 0.1μW |
DSC sensitivity | 0.1μW |
Temperature control mode | Rising temp., constant temp., falling temp. (automatic control) |
Curve scanning | Rising temperature scanning, |
Atmosphere control | Static or dynamic atmosphere |
Display | Large LCD screen Engligh |
Power | 220V, 50HZ |
Offer standard material (indium, tin, lead), user can calibrate the temperature by self. | |
BS EN 728
Plastics piping and ducting systems. Polyolefin pipes and fittings. Determination of oxidation induction time.
ISO 11357-6:2018
Plastics -- Differential scanning calorimetry (DSC) -- Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)
ASTM D3417
Standard Test Method for Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry (DSC)