Division:
55 I 77
Before removing the waste bag, have the following materials ready inside the
ST1 safety weighing enclosure:
Only approved cleaning agents may be used.
Cleaning must be carried out in accordance with the operator's work
instructions according to the properties of the hazardous substances used.
Acetone or other strong solvents must not be used for cleaning the
enclosure walls (incompatibility with acrylic (PMMA)).
Carrying out the cleaning
The ST1 safety weighing enclosure must always be kept clean. The work surface must be
cleaned after each use and decontaminated, if necessary, to avoid cross-contamination and
substance leaks due to transverse flows.
Contaminants must be absorbed and disposed of in a safe manner. Also observe your
operational cleaning instructions!
As a rule of thumb, follow these 4 steps:
1 Mechanical absorption of the hazardous substance using cloths or possibly a special
vacuum cleaner for active substances
2 Precleaning
Carry out the initial cleaning step with a cleaning cloth moistened with water. The liquid
should not dissolve the processed substance. Then, dispose of the cleaning cloth via the
waste system.
3 Cleaning
Carry out the second cleaning step with a cleaning cloth moistened with solvent. The
liquid should dissolve the processed substance. Then, dispose of the cleaning cloth via
the waste system.
4 Subsequent cleaning
Subsequent cleaning is done with a dry cloth. Then, dispose of the cleaning cloth via the
waste system.
Observe the suitability of solvents
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