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Instrument: CO2 Coulometer

Acronym:
 CO2 coulometer
External Identifier:
» skos:broadMatch http://vocab.nerc.ac.uk/collection/L05/current/LAB12
Description

A CO2 coulometer semi-automatically controls the sample handling and extraction of CO2 from seawater samples. Samples are acidified and the CO2 gas is bubbled into a titration cell where CO2 is converted to hydroxyethylcarbonic acid which is then automatically titrated with a coulometrically-generated base to a colorimetric endpoint.