A set of transformations is proposed by which the results of all kinds of polarographic and voltammetric measurements involving linear, semi-infinite diffusion of reversible redox couples can be presented in the form of a unified, standardized W = n2F2(c(o)* square-root D(o) + c(R)* square-root D(R))/{4RT cosh2 [nF (E(dc) - E1/2)/2RT]) function, which can be identified as the coefficient of the specific Warburg-admittance of the redox couple. Using these transformations the measured I(E) functions, voltammograms, polarograms, DPP’s, a.c. polarograms etc., become independent of the E(t) function and the type of electrode used.