Metrohm inline calibration permits very low concentrations – in the lowest ppt range – to be reliably calibrated using a single standard of higher concentration – in the ppb range.
The sample is transferred to the preconcentration column fully automatically and with high precision by the intelligent 800 Dosino. The anions are retained. The matrix can be removed in a rinsing step. The clean sample is then injected to the IC system.
The 850 Professional IC – Prep 2 is equipped with an additional valve for liquid handling. The peristaltic pump transfers the standard solutions. The intelligent MagIC Net™ software controls and monitors the system.
Calibration and calculation of the results as a function of preconcentration volume are also provided by the MagIC Net™ software. Even if complex procedures are involved, operating the system is perfectly easy.
The anion system is equipped with sequential suppression. Very high sensitivity is achieved by this unique combination of chemical and downstream CO2 suppression. The flexibility of the carbonate eluent is complemented by the low background conductivity of a hydroxide eluent. With the preconcentration technique carbonate interference is practically eliminated.
The 858 Professional Sample Processor holds the samples. Numerous sample racks for volumes 0.5...500 mL are available. Typical preconcentration volumes are between 0.5...100 mL.