Concept
Automated Coulometer (Robinson and Williams, 1992)
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL0635/1/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | Automated coulometer | ||
| Definition | An automated coulometric titration system used for the continual measurement of dissolved inorganic carbon (TCO2), developed by Robinson and Williams (1992). The instrument consists of a sampling pipette, CO2 extractor-stripper, scrubbers and a coulometer interfaced with a PC. The equivalence point is detected photometrically with thymolphthalein as the indicator. It is based on the Johnson et al. (1987) 5011 coulometer manufactured by UIC, but with a number of improvements, including: improved analytical time of 6 minutes; solid state optical liquid-level switches; a three-way mixer valve to allow interchange between sample and standard input; and replacement of PTFE tubing with stainless steel. The Robinson and Williams (1992) coulometer achieves an analytical precision (1 SD) of +/-0.5-1.0 umol/kg (0.025-0.05 percent) and accuracy of 0.15 percent. | ||
| Date | 2013-08-14T15:42:08 | ||
| Identifier | SDN:L22::TOOL0635 | ||
| Note | accepted | ||
| Is Version Of | TOOL0635 | ||
| version | 1 | ||
| Broader | |||
| L05 SeaDataNet device categories - (2) | |||
| Related | B75:ORG00011 |
Bangor University, School of Ocean Sciences | |
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