Metrohm 892 Professional Rancimat, Руководство пользователя

Страница: 46 / 63

4.3 Determinations
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
38
￭￭￭￭￭￭￭￭
892 Professional Rancimat
4 Connecting and inserting reaction vessels
NOTICE
The temperature defined in the method has to be reached before
you insert the reaction vessels, i.e., the temperature display has to
be
green .
￭
Seal the unused positions with stoppers or empty reaction vessels
for protection against impurities.
￭
Connect the white silicone tubing which is connected to the reac-
tion vessel covers to the M8/olive tubing adapter of the measur-
ing vessel covers.
￭
Screw the pieces of FEP tubing 250 mm to the M8/M6 thread
adapters of the reaction vessel covers and the air supply connec-
tors of the 892 Professional Rancimat.
￭
Insert the prepared reaction vessels into the recesses of the heat-
ing block.
￭
Press the start button to start the data recording immediately after
inserting each single reaction vessel.
4.3.4 Cleaning the accessories
1 Cleaning the measuring vessels and accessories
￭
Clean used measuring vessels after pouring off the measuring
solution with ethanol or 2-propanol ( do not use acetone! ) or in
the dishwasher.
Pre-clean with dishwashing detergent in the case of severe con-
tamination.
￭
Pre-clean with dishwashing detergent in the case of severe con-
tamination.
￭
Thoroughly rinse with distilled water.
￭
Clean the measuring vessel covers , the PTFE cannula and the
electrodes with acetone or 2-propanol or in the dishwasher and
thoroughly rinse with distilled water.
Pre-clean with dishwashing detergent in the case of severe con-
tamination.
Remove the protective ring to facilitate cleaning of the electrodes.
2 Cleaning the reaction vessels and accessories
￭
Dispose of used reaction vessels and air tubes and use new
reaction vessels and air tubes for the next measurement.