Polarographic Theory, Instrumentation, and Methodology

Controlled-Potential and Derivative Polarograph

“…The use of a quadruple parallel-T RC filter eliminates very wide fluctuations in the values of the derivative due to growth and fall of the D.M.E. drops (8,9,IS,18). Heavy damping of other types would severely broaden the derivative peaks so that those from waves of close half-wave potentials would overlap.…”