| 摘要 |
A method of determining the content of SO2 in a beverage product contained within a process line, such as beer, wine, champagne, fruit juice, etc., the method comprises: extracting a sample of a specific volumetric size of the beverage product from the process line, injecting the sample to a sealed sample container defining a specific inner volume exceeding the specific volumetric size of the sample for the generation of a gaseous headspace above the sample within the sealed sample container, allowing the sample to establish in the gaseous headspace a concentration of SO2 representative of the content of SO2 of the beverage product, transferring a fraction of the gaseous headspace to an IR measuring apparatus, measuring the content of SO2 of the fraction of the gaseous headspace by means of the IR measuring apparatus, and determining the content of SO2 of the beverage product on the basis of the measurement of the content of SO2 of the fraction of the gaseous headspace, preferably the measurement of the content of SO2 is performed as a determination of the attenuation of transmission through the fraction at one or more IR wavelengths. <IMAGE> |
