Standard test methods
employing the Volumetric techniques include ASTM
E203 and ISO 760. Each technique utilizes the same
basic chemistry, differing only in the manner in which
the water-reactive Iodine complex is introduced into the
test solution. In Coulometry it is generated in situ by
application of an electrical current – in Volumetry it is
dosed in by an automatic Buret. (Please refer to the
following illustrations).