14 Cleaning and Storing the Instrument
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C76IB003EN-E
Cleaning liquids
For cleaning and drying, employ two cleaning liquids:
•
Cleaning liquid 1 dissolves and removes sample residues in the measuring
cell. It has to be a good solvent for all sample components.
•
Cleaning liquid 2 removes cleaning liquid 1 and is easily evaporated by a
stream of dry air in order to accelerate drying of the cell. Cleaning liquid 2
has to be a good solvent for cleaning liquid 1.
Recommended for aqueous samples and beverages: water (cleaning liquid 1)
and non-denatured ethanol (cleaning liquid 2).
Recommended for petrochemical samples: petroleum naphtha (cleaning liquid 1)
and acetone (cleaning liquid 2).
If you are not sure if a cleaning liquid is suitable for your sample, perform a
preliminary test in a test tube to see if any phase separation, precipitate or
opalescence can be observed.
To perform a cleaning and drying procedure without Xsample filling
equipment
1. Rinse the measuring cell with cleaning liquid 1 (minimum 5 mL).
If your sample is viscous or contains particles, use more cleaning liquid.
2. Empty the measuring cell.
3. Rinse the measuring cell with cleaning liquid 2 (minimum 5 mL).
4. Empty the measuring cell.
5. Insert the air pump hose with the adapter Luer cone into one of the injection
adapters.
Fig. 14 - 1
Drying the measuring cell