The ATRS-01 attenuated total reflection attachment sample independently developed by Tianjin Energy Spectrum Technology does not require pre-treatment, simplifying the sample production process. It is widely used in various solid and liquid sample testing, such as surface composition analysis of polymer material products such as plastics, fibers, rubber, coatings, adhesives, etc. ATRS-01 mainly uses ZnSe crystals, which have good hardness and high transmittance, and can meet the testing needs of various conventional samples. At the same time, it can be used in conjunction with our company's iCAN 9 Fourier transform infrared spectrometer, which is more convenient and efficient. Attenuated Total Reflection (ATR) technology is currently a widely used sampling technique. ATR can perform in-situ qualitative or quantitative testing, and the sample does not need to be prepared. The sample can be directly placed on the ATR crystal for testing. Therefore, it can greatly accelerate testing speed and improve testing efficiency.

The working principle of ATR is that the infrared beam enters a crystal with a high refractive index, and the infrared beam is reflected back from the crystal surface. However, at the same time, there is an attenuated wave region in the sample, and some of the infrared beam is absorbed by the sample and reflected back to the detector to obtain the infrared spectrum information of the sample. The phenomenon of total reflection does not occur entirely at the interface between two media. Some light beams need to enter the sample medium for a certain distance before reflecting back. The light beams that penetrate the sample medium, in the transparent area of the sample, reflect almost equal to the incident light energy, while in the absorption area of the sample, some of the incident light is absorbed. Total reflection "is attenuated, and its degree of attenuation is related to the absorption coefficient of the sample. Therefore, scanning the entire mid infrared region can obtain an infrared spectrum that is very similar to the transmittance spectrum, commonly known as the ATR spectrum. The intensity of the spectral bands in attenuated total reflection depends not only on the absorption properties of the sample itself, but also on the number of times light is reflected on the sample surface and the depth of penetration. Generally speaking, the deeper the penetration, the stronger the absorption.