Metrohm 895 Professional PVC Thermomat - Manual (Page 34)

4.3 Determinations
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895 Professional PVC Thermomat
￭ 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 895 Professional PVC Thermomat.
￭ 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.
4.3.3 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.
￭ Clean the reaction vessel covers with acetone or 2-propanol or
in the dishwasher and rinse with distilled water.
Pre-clean with dishwashing detergent in the case of severe con-
tamination.
￭ Then heat the reaction vessel covers in the drying oven for 2
hours at 80 °C.
NOTE
Replace the reaction vessel covers if they no longer sit tightly on
the reaction vessel or the material is brittle.