infrared spectroscopy
The absorption of energy in the infrared region of the electromagnetic spectrum corresponds to transitions between different of vibrational levels of molecules.
Such vibrations, e.g. stretching, bending and torsion vibrations, are specific to a particular molecule. Infrared spectroscopy, usually in the range 4000 to 200 cm-1, enables materials and products of reactions to be characterised and identified.
infrared cells
infrared cell for gases:
infrared cell for solutions:
Mull of sample mixed with Nujol:
infrared pellet for sampling solids:
