Fourier Transform infrared (FTIR)
The FTIR measurement principle is based on an interferometer using a so-called Fourier transformation to generate the spectrum from the data. The method is easy, fast and accurate, combining high sensitivity with a full spectrum, enabling instrument standardisation and the use of calibrations for multiple instruments.
FTIR spectroscopy is particularly useful for homogenous, liquid samples, making it the preferred infrared absorption spectroscopy method for samples such as milk and wine. In dairy applications FTIR solutions measure parameters such as fat, protein and lactose content in milk for payment analysis, QA/QC applications and in-line process control. For grape, must and wine FTIR analysis solutions measure the content of must and wine for multiple parameters such as sugars, acids and ethanol.