Karl–Fischer coulometer A piece of apparatus, consisting of an electrolytic cell with an anodic compartment containing sulfur dioxide (SO2), iodide (Iï¿½) and a cathodic compartment containing the sample, which is used to determine trace amounts of water in a sample by measuring the time and current flow required to reach the titration end-point. CHMO:0002679 Karl Fischer coulometric titrator Karl-Fischer coulometer 2010-01-16T03:09:59Z Karl Fischer coulometer https://orcid.org/0000-0001-5985-7429 electrochemical coulometer