KBr Pellet
Definition
A classical solid sample mode: 1 to 2 mg analyte ground with about 200 mg dry KBr and pressed in a 13 mm die at 8 to 10 tonnes into a transparent disc.
Related terms
- ATR-FTIR
- Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy: a non-destructive mid-infrared method that analyses a single drop of milk pressed against an ATR crystal....
- Fingerprint Region
- The 1500 to 400 cm⁻¹ stretch of an infrared spectrum where bending and combination bands produce a pattern unique to a given...
- FTIR
- Fourier-transform infrared spectroscopy. A Michelson interferometer modulates all wavelengths simultaneously, the interferogram is Fourier-transformed into the conventional absorbance versus wavenumber spectrum.
- Group Frequency
- A characteristic absorption band associated with a specific functional group (carbonyl about 1700 cm-1, hydroxyl 3200 to 3600 cm-1) used to read...
- Wavenumber
- The reciprocal of wavelength expressed in cm-1, the universal IR axis. Higher wavenumber means higher photon energy. The mid-IR window is 4000...
Explained in
- Infrared Spectroscopy: FTIR and ATR-FTIRA classical solid sample mode: 1 to 2 mg analyte ground with about 200 mg dry KBr and pressed in a 13 mm die at 8 to 10 tonnes into a transparent disc.