The in-line determination of carbon dioxide in beer by infrared analysis.

Wilks, P.A.

Abstract
The set up and principle of LAN-1 carbon dioxide monitors are described for beer on-line and laboratory analysis. The 4.26 micro m IR absorption band is used to determine the content of dissolved carbon dioxide utilising multiple internal reflection (MIR) as on-line sampling technique. Advantages of the LAN-1 carbon dioxide monitors are: in situ carbon dioxide determination in dissolved state, continuous measurement, results are available within seconds, nondestructive analysis, all equipment components are cleanable with standard procedures. Effects of varying alcohol and solid contents on carbon dioxide analysis are assessed.
Keywords : analysis beer carbon dioxide equipment infrared radiation on-line