A METHOD OF DETERMINING THE CONTENT OF SO2 IN A BEVERAGE PRODUCT

摘要

A method of determining the content of SO2 in a beverage product or a foodproduct, such as beer, wine, champagne, fruit juice, etc., the methodcomprises: extracting a sample of a specific volumetric size of the beverageor food product from the process line, injecting the sample to a sealed samplecontainer defining a specific inner volume exceeding the specific volumetricsize of the sample for the generation of a gaseous headspace above the samplewithin the sealed sample container, allowing the sample to establish in thegaseous headspace a concentration of SO2 representative of the content of SO2of the beverage product, transferring a fraction of the gaseous headspace toan IR measuring apparatus, measuring the content of SO2 of the fraction of thegaseous headspace by means of the IR measuring apparatus, and determining thecontent of SO2 of the beverage product of the basis of the measurement of thecontent of SO2 of the fraction of the gaseous headspace, preferably themeasurement of the content of SO2 is performed as a determination of theattenuation of transmission through the fraction at one or more IR wavelengths.