Dr. Bernhard Wessling
Ormecon Chemie GmbH & Co. KG, Ammersbek
(a subsidiary of Zipperling Kessler & Co.)
This routine measurement can be performed under various well-known conditions [5b, 6, 8, 32] and does not need to be described further. Schauer et al. [32] have confirmed the range of the high potential shift found by us earlier [5]. Our internal specification is a potential shift to at least +100mV and a long term stability of it.
