Online Measurement of Water Content in Candidate Reference Materials by Acousto-Optical Tuneable Filter near Infrared Spectrometry (AOTF-NIR) using Pork Meat Calibrants controlled by Karl Fischer Titration

High-speed acousto-optical tuneable filter near-infrared spectrometry (AOTF-NIR) has been implemented for online measurement of water content in powder matrix reference materials present in amber glass vials. Almost 50.000 spectra were collected from 1300 to 2100 nm with a 2 nm increment for powders of meat, rye grass, potato, cotton seed and sugar beet. Good agreement was obtained between AOTF-NIR and Karl Fischer titration for all matrices investigated.JRC.D.2-Reference material