Functions and setup of the contrAA 600
contrAA 600
Edition 01/2014
35
1
Sample tray with cover
2
Autosampler arm
3
dosing unit (5000 µL)
4
Storage bottle for diluent
5
Fluidik module
6
Storage bottle for washing liquid
Fig. 16
Autosampler AS-FD with separate Fluidik module
The autosampler AS-FD features an extra Fluidik module with a dosing unit (5000 µL). The
Fluidik module is electrically connected to the autosampler and is supplied with operating
voltage via the contrAA 600. Standards or samples are diluted in the mixing cup by first
placing the concentrate into the mixing cup. Then the diluent is added at a high dosing speed
(max. volume: V = 25 mL). A fixed waiting time ensures complete mixing. A second dia-
phragm pump extracts the residual liquid that has not been taken up by the nebulizer.
The autosampler AS-FD with dilution function features the following advantages:
Preparation of standards for the calibration by diluting one or several stock stand-
ards in the mixing cup
Dilution of the sample if its concentration is too high, i.e., its element content is high-
er than 110 % of the calibration standard with the highest concentration
Dilution of all samples at freely selectable dilution ratios up to a ratio of 1:500
