Heated Single-Reflection ATR Overview
ATR PRO 670H-S is a heated single-reflection. This ATR meets the demand for measuring changes with ATR while gradually applying temperature to the sample.
![Heated single-reflection ATR ATRPRO670H-S](https://jascoinc.com/wp-content/uploads/2022/02/ATRPRO670HS-480x247.jpg)
Maximum Heating Temperature /Corresponding Prism
With the ATR PRO670H-S, you can select from three types of prisms, and the maximum heating temperature depends on the prism.
Prism | Maximum Heating Temperatures |
ZnSe | 120℃ |
Ge | 150℃ |
Diamond | 180℃ |
For example, diamond can be measured while heating up to 180 °C.
Both prisms use the same high-efficiency type as that used for normal single-reflection ATR, enabling high-precision measurement even when using a TGS detector.
Measurement of Salad Oil at 180°C
The spectrum below is shown by measuring the degree of deterioration of salad oil at 180 ° C using ATR PRO 670H-S.
The cis – trans conversion of unsaturated fatty acids in fats and oils is observed with oxidative deterioration.
Therefore, the degree of deterioration can be investigated by observing the peaks derived from each.
![Spectral changes of salad oil at 180 ° C](https://jascoinc.com/wp-content/uploads/2022/02/CisTransTransform-English-480x297.png)
350°C Heated ATR
This 350°C heated single-reflection ATR supports heating measurements up to 350°C and is more suitable for tracking sample melting, glass transition, etc.
![350°C Heated Single-Reflection ATR](https://jascoinc.com/wp-content/uploads/2022/02/350ATR-480x247.jpg)
The spectrum on the left tracks changes in the carbonyl group during PET heating.
By heating from room temperature to 350°C, it was possible to observe how the peak of the carbonyl group shifts to the high frequency side.
![Tracking changes in carbonyl groups during PET heating](https://jascoinc.com/wp-content/uploads/2022/02/PetTempControl-English-480x297.png)
Figure 4 Tracking changes in carbonyl groups during PET heating
Heated Single-Reflection ATR Specifications
ATR Prism | ZnSe, Ge, Diamond (670H-S) Diamond (690H-H) | ![]() |
ATR/Sample Contact Area | 1.5 mm diameter (ZnSe, Ge) 2.0 mm diameter (Diamond) |
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No. of Reflections | 1 | |
Angle of Incidence | 45° | |
Pressure | 400 kg/cm2 (670H-S) 1,700 kg/cm2 (690H-H) |
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Operating Temperature | 180°C (Diamond) 150°C (Ge) 120°C (ZnSe) |
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* A connector panel is required when this accessory is fitted to the FT/IR-6000FV. |