Metrohm has presented a system for fully automated inline eluent preparation based on its intelligent ion chromatography (IC) systems.
The new technique eliminates error-prone and labour-intensive eluent preparation steps while improving the accuracy of the chromatographic analysis.
Using the 800 Dosino and the 849 Level Control as the only additional devices, Metrohm's intelligent IC systems - the 850 IC and the Compact IC family - can be extended to perform any inline eluent preparation.
Controlled by Magic Net software, the 849 Level Control monitors the eluent level while the 800 Dosino performs all dosing and liquid-handling tasks.
In a test, consecutive injections of a 250-ug/L standard over approximately 20 days revealed good retention-time stability.
After more than 800 consecutive injections, relative standard deviations for standard anions and cations were smaller than 0.55 and 0.41 per cent respectively.
In the case of a 24hr sequence, retention-time precision for anions and cations was better than 0.09 and 0.08 per cent respectively.
Metrohm's inline eluent preparation system increases the retention-time reproducibility and allows the continuous determination of anions and cations without manual eluent preparation.
