Laboratory Equipment & Services Information System by Centralized Laboratory Management Office (CeLMO)

Fourier transform infrared spectroscopy (FTIR) is a technique used to obtain infrared spectrum based on the amount of absorption or transmittance of IR in a sample. FTIR is frequently used in a wide range of structural analysis and non-destructive measurement applications.​

ATR (diamond) is NOT SUITABLE for:

1. Analyzing gases.
2. Highly absorbing samples (e.g. thick polymers, carbon black, and some organic dyes)
3. Samples with rough surfaces.
4. Samples with low refractive indices (e.g., air, oils, or some polymers)
5. Samples with strong luminescence.

ATR Sample preparation:

1. Samples must be 0.5g - 1.0g or 0.5ml - 1.0ml.
2. Samples must be properly labeled.
3. Sample must be collected within 14 days after the receiving the results.

KBr Sample preparation

1. Sample must be totally dried.
2. Samples must be 0.5g - 1.0g
3. Samples must be properly labeled.
4. Sample must be collected within 14 days after the receiving the results.

*Please kindly reach out to the designated contact person for further elaboration and additional information.

Attenuated total reflection (ATR) is a powerful sampling method that allows the direct measurement of samples for FTIR. ATR method involves pressing the sample against a high-refractive-index prism and measuring the infrared spectrum using infrared light that is totally internally reflected in the prism. It allows direct examination of solid or liquid samples without extensive preparation.

KBr pellet method (KBr) is a method involves mixing the sample with KBr powder, forming it into a pellet, and measuring the infrared spectrum. It is the basic measurement method for powder samples.