Notion of residence time distribution

1 See edited hook Agitation and Mdlange, by C. Xuereb, M. Poux, and J. Bertrand (Dunod, Paris, 2006). 

The RTD experiment consists of measuring the time variations of concentration Cs(t) in the outlet section of the reactor. Experimentally, the products injected are often ions, and the measurement of concentration level is performed by measuring the electrical conductivity at the reactor s outlet. What is actually plotted is the normalized concentration  

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A good introduction to the notions of residence time distributions can be found in an article by ... 

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