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4
Cleaning and maintenance
SPA C SPA C SPAC SPAC
4.1
Cleaning the sample vessel
The first two cleaning steps should also be carried out before a sample vessel is
used for the first time.
!
Do not use cleaning agents which contain surfactants (soap, rinsing agents) or
any alkaline cleaning agents.
!
Use only pure solvent and clean, lint-free cloths.
4.1.1
Step 1: Cleaning with water
Rinse out the sample vessel under hot flowing water, wiping it alternately with
paper.
Rinse the sample vessel with distilled water.
4.1.2
Step 2: Check cleanliness
Wipe out the sample vessel with moistened tissue paper.
If there is a squeaking sound when wiping, this indicates that the sample
vessel is mostly free of surfactant residues. Rinse the sample vessel again
with distilled water. Dry the sample vessel in a drying cabinet.
If the paper slides on the glass, there are surface-active substances on the
surface of the glass. In this case, carry out more intensive cleaning by
performing the step described below.
4.1.3
Step 3 (if necessary): Scarfing
Scarf the sample vessel with the flame of a Bunsen burner.
When scarfing use crucible tongs and wear fire-proof gloves.
Allow the glass to cool on a heat-resistant sheet before using it again.
Cleaning and maintenance
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