Abstract: A new method and a system for the simultaneous determination of a biological, chemical and/or physical property of a plurality of individual samples of a turbid is described. The invention relates to a system and colorimetric method for simultaneous determination and measuring properties, such as acidification or pH value, redox potentials, viscosity, diffusion, enzymatic activity, etc. of a plurality of individual samples of a turbid or opaque medium, such as, e.g. milk, whey and related products. In particular, this invention relates to a method for non-invasively and/or non-destructively scanning samples or an array of samples, and determine on the basis of the scanning a specific property, such as pH, of the samples. The method may also be used for multivariate determinations of chemical and/or physical properties.

Abstract: The present invention relates to dynamically controlling the expansion of a fluid bed reactor system. By mounting a density detector to a floating body that floats on top of the carrying medium in the fluid bed, one can detect the density at a certain position that is level with the sensor head of the detector. Upon comparing the density detected with a pre-determined density, the flow velocity of the carrying medium is adjusted accordingly.

Abstract: A novel method is provided for detection and/or control of the dynamics, e.g. the headspace, in a fluid bed reactor system based on detecting a pre-determined particle density gradient formed within a spatially confined fluid bed of fluidised particles in a carrying medium. More specifically, a method is provided where transmitting means and receiving means are used for detecting the pre-determined particle density gradient formed and subsequently the signal is used for activating or deactivating flow controlling means whereby the dynamics of the system can be controlled.