Metrohm 885 Compact Oven SC - Manual (Page 66)

8.1 Conditioning the system ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
56 ￭￭￭￭￭￭￭￭ 885 Compact Oven SC
Preparing blanks
1 Seal 3 to 5 empty sample vessels tightly with a septum seal.
2 Place the blanks on the first positions on the rack.
Preparing samples
1 Weigh in the samples into empty sample vessels and seal the vessels
tightly with a septum seal.
2 Place the sealed sample vessels on the rack in suitable sequence
(after the blanks).
3 Enter the sample IDs and the sample sizes of the samples in the cor-
rect sequence in the sample table of the titrator. Specify the titration
method for the samples in each line.
Starting the method
1 Press the [START] key on the 885 Compact Oven SC.
The sample rack is rotated. The lift moves downwards and the needle
pierces the septum of the conditioning vessel.
The gas flow is switched on automatically.
The titrator is started by the 885 Compact Oven SC with an electrical
signal. The conditioning of the titration cell begins.
Note
The carrier gas should emerge from the tip of the heating tubing into
the working medium as tiny bubbles and be spun there forcefully. Mod-
ify the stirring rate if necessary. The tip of the tubing should be
immersed until it reaches the bottom of the KF titration cell and be
rotated against the vessel wall.
Swivel the KF titration cell now and again in order to remove the last
traces of moisture.
If the required oven temperature has not yet been reached, then waiting
continues until this is the case. Afterwards, the 885 Compact Oven SC