Analyzers are described that include a display for displaying a screen selected from a plurality of screens, which may display a hierarchical menu corresponding to a predetermined screen. Also provided are genomic promoter regions to these encoding regions to cellulose synthase. The optical device further includes a first lens plate having first sub-lenses, in which each first sub-lens projects a part of the radiation beam at an illumination window, such that the projections of each first sub-lens at least partially overlap. The drink spout system may additionally or alternatively include a valve assembly that is configured to prevent drink fluid from being unintentionally dispensed from the drink container, such as when the drink container is pierced by the drink spout system or when the drink container is tipped over or dropped.