HS 55 (Batch Mode)
Operation
37
Solution
Preparation
Shelf life, comments
Standards
0 / 0.2 / 0.4 / 0.6 / 0.8 /
1.0 µg/l As
Example: 1 µg/l As standard
1 ml of solution 3 +
7 ml HCl (37 %, p. a.) +
1 ml KI/ascorbic acid solu-
tion
After 45 minutes, fill up with
H
2
O (dist.) to 100 ml.
Prepare the standards fresh
on a daily basis.
KI/ascorbic acid solution
Solution
Preparation
Shelf life, comments
5 % KI + 5 % ascorbic acid
2.5 g KI +
2.5 g ascorbic acid
Fill up with H
2
O (dist.) to
50 ml.
Several days (refrigerated at
≤7 °C)
Do not use if you notice any
signs of discoloration.
5.2
Switching the device on and off
Tasks for daily commissioning
}
Hook the hose cartridge for the sample into the 1-channel hose pump.
}
Firmly connect the pump hose/pump hoses by adjusting the locking lever.
}
Load the system with reduction agent:
– Start the control and analysis software.
– In the Quick Start window, select the Hydride method and initialize the device
configuration. Close the window with OK.
– Click the Hydride syst. button.
– Select the Control tab and click the Load system button.
ü
The device is ready for operation.
Tasks prior to daily shutdown
Before closing, the program asks you whether you would like to clean the Hg/hydride
system.
}
Click Start to start the system cleaning process.
}
When prompted, dip the intake hose(s) into distilled water or, alternatively, a slightly
acidic solution.
}
The Hg/hydride system flushes the reduction agent hose.
}
When prompted, remove the hose from the flushing solution. The Hg/hydride sys-
tem then pumps out the hose.
}
If necessary, repeat the system cleaning process.
}
Relieve the pump hose by releasing the hose cartridge at the 1-channel pump.
}
Recommendation: Store the reduction agent solution in the refrigerator.
ü
The device can be switched off.
