Information on the most widely used ASTM standards within the materials testing industry
Model: UT3335, ISO 6964, ISO 1408
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.,
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.
General Introduction
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.,

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.
Key Features
1. Industrial grade 7 inch touch screen, display rich information.
2. Brand new ceramic furnace structure, better baseline and higher precision. The heating adopts indirect conduction mode, which has high uniformity and stability, reduces pulse radiation, and is better than the traditional heating mode.

3. USB communication interface, strong versatility, reliable communication without interruption, support self-recovery connection function.
4. Automatically switch two air flow rates, fast switching speed and short stabilization time. At the same time, a shielding gas input is added.
5. The software is simple and easy to operate.
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)
Main Technical Specification
| Temperature range | Room temperature ~ 600°C (air cooling) |
| Heating rate | 0.1~100°C/min |
| Temperature resolution | 0.01°C |
| Temperature 0.1 ℃ accuracy | ±0.01°C |
| Temperature repeatability | ±0.1°C |
| Constant temperature time | program setting |
| Temperature control mode | PID temperature control, temperature rise, constant temperature (automatic program control) |
| Atmosphere control gas | nitrogen, oxygen (automatic switching of instrument) |
| Gas flow | 0-300mL/min |
| Gas pressure | 0.2MPa |
| The measuring range | 0~±600mW |
| DSC resolution | 0.01μW |
| DSC sensitivity | 0.001μW |
| Display mode | 24bit color, 7 inch LCD touch screen display |
| Data interface | standard USB interface |
| Parameter standard | equipped with standard materials (indium, tin), users can correct the temperature by themselves |
| Curve scanning | temperature rise scan, cooling scan, constant temperature scan |
| Display | Large LCD screen EnglighWith English software, can install on user's computer |
| Power | 220V, 50HZ |
| The instrument has multiple sets of thermocouples, one set to test the sample temperature, and one group to test the internal ambient temperature of the instrument.The instrument has multi-point correction function, which can meet the accurate testing of high, medium and low samplesThe software can set the data acquisition frequency, and can export EXECL data packages and PDF reports | |
Touchung screen Oxidation induction time tester
24bit color, 7 inch LCD touch screen display
equipped with standard materials (indium, tin), users can correct the temperature by themselves
Partial test case graph analysis:
1.PE. Oxidation period test of PPR and other pipes:
Oxidation induction time (OIT) is measured by DSC (Differential Scanning Calorimeter). The specimen is usually heated to a specified temperature and constant temperature under a nitrogen atmosphere, and then switched to an oxygen atmosphere, after which the material begins to oxidize and heat is released. This release heat is detected by the sensor, through software analysis, the induced oxidation time (OIT), the length of the oxidation induction time is a parameter of the oxidative decomposition resistance of the reaction material, or very meaningful, usually buried plastic pipes must detect this parameter.

2. Glass testing of resin and other materials:
For amorphous polymers, when the polymer changes from a highly elastic state to a glassy state through cooling, or from a glassy state to a highly elastic state through heating, it is called a glass transition, and the temperature at which the glass transition occurs is called the glass transition temperature. For crystalline polymers, the glass transition refers to the transformation from a highly elastic state to a glassy state (or a glassy to a highly elastic state) in its amorphous part. Therefore, glass transition is a common phenomenon in polymers. However, the phenomenon of glass transition is not limited to polymers, and some small molecule compounds also have glass transition.

3. Material melting point, enthalpy test (thermal stability test)
The melting point is the temperature at which a solid converts its state of matter from a solid state or melts into a liquid state, and the multi-component mixture produces a multi-peak peak

4. Curing test of glue and other materials
It refers to the process of changing the substance from low molecular weight to high molecule, and the strength of the cured sample will be higher

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