Problems of residence time distribution analysis with applications of radiotracers

The applications of radiotracers for determination of impulse response as Residence Time Distribution (RTD) as well as technical conditions for realization of experiment in industry create special requests for data processing. The table of required corrections and methods for RTD analysis with the basic information is presented. The methods for the raise background subtraction, correction for variable flow and new algorithms for RTD analysis from response to arbitrary input function and from the response distorted by the recirculation flow in so called black or gray box system are presented.