The modular «MIC-4 Advanced» anion or cation system with electronic suppression and preconcentration has, when compared with a simple anion-cation system consisting of an 818 IC Pump, 819 IC Detector and 820 IC Separation Center, been extended by two further components: the 838 Advanved IC Sample Processor and a preconcentration column that is located on the injection valve instead of the sample loop.
The built-in peristaltic pump of the 838 Advanved IC Sample Processor transfers your standard and then your samples to the preconcentration column. The preconcentrated sample is then eluted onto the separating column in counterflow.
The favorably priced system works with electronic suppression. This technique is characterized by the fact that the peak area or height is directly proportional to the concentration of the particular ion throughout a wide range. This is why it is normally only necessary to carry out a one-point calibration, which makes work quicker and easier.