On the problem of representation of contaminated water samples

On the basis of the general requirement to water sampling(guarantee of identity of radionuclide composition and concentration in samples and waste waters) and modern representations on radionuclide state in water the motion of waste water sample representativeness, when determining radionuclide content, is specified. Criticism of known autonomous sampler designs for well-water sampling is given. An additional reqiurement to them in determination of radionuclide content, is formulated provision of concentration identity and suspension content in a single sample transfered into a neutralizing sampling vessel and in waste waters just in the moment of sampling