Hach TU5400 User Instructions page 4

2.1.1 Use of hazard information
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death
or serious injury.
Indicates a potentially hazardous situation that may result in minor or moderate injury.
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that
requires special emphasis.
2.1.2 Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
Electrical equipment marked with this symbol may not be disposed of in European
domestic or public disposal systems. Return old or end-of-life equipment to the
manufacturer for disposal at no charge to the user.
This symbol, if noted on the instrument, references the instruction manual for operation
and/or safety information.
This symbol indicates that a risk of electrical shock and/or electrocution exists.
This symbol indicates the need for protective eye wear.
This symbol indicates a laser device is used in the equipment.
This symbol identifies a risk of chemical harm and indicates that only individuals qualified
and trained to work with chemicals should handle chemicals or perform maintenance on
chemical delivery systems associated with the equipment.
This symbol indicates radio waves.
This symbol indicates the presence of a strong magnetic field.
4 English
D A N G E R
W A R N I N G
C A U T I O N
N O T I C E