While water analysis typically involves multiple steps, instruments and workflows, and intensive calibrations, the companies’ combined titration and ion chromatography system offers reliable and secure analysis of a large number of samples as well as one-step automated calibrations, according to Mettler Toledo and Thermo Fisher Scientific.
The combined Titration/IC system provides complete automation for testing properties and ions in drinking, ground, surface and waste water. It improves efficiency by combining the determination of up to 20 different parameters from a single sample into a completely automated workflow.
The titration system determines conductivity, pH value and alkalinity. The intelligent conditional capability of the titrator chooses the correct sample loop for anion analysis based on the conductivity of the sample. The IC instruments provide analysis for common anions (F-, Cl-, NO2-, etc.) and cations (Na+, NH4+, Mg2+, etc.).
By combining the IC and titration results, the system can also provide results for total hardness, ion balance and carbonate hardness. All analyses on a single sample are completed in 20 minutes with only seconds of operator interaction, the companies say.
After sample testing, the entire system is automatically thoroughly cleaned and rinsed, eliminating any chance of sample carry over. Because of the patented PowerShower rinse technology on the sample changer and mechanical cleaning of the IC lines by air then deionized water, cross-contamination is completely avoided, the companies say. This is crucial in water analysis, as a small amount of carryover can lead to large result deviations.
The Mettler Toledo Liquid Handler device automates complex and tedious dilutions for IC standardization. The automated dilution saves time during the standardization procedure, and assures accuracy in dilutions for consistent and repeatable standardizations from one operator to the next.
The IC software integrates the control and results from both instruments. The laboratory operator needs only to interact with a single software system for sample identification and combined flexible reports with all sample results.