Hach-Lange SI792(x) E HACH GLI 3700 series SI792(x) T 7MA2200 and 8398 series User Manual - Manual (Page 14)

General information
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Electrical equipment marked with this symbol may not be disposed of
in European public disposal systems after 12 August of 2005. In
conformity with European local and national regulations (EU
Directive 2002/96/EC), European electrical equipment users must
now return old or end-of life equipment to the Producer for disposal
at no charge to the user.
Note: For return for recycling, please contact the equipment
producer or supplier for instructions on how to return end-of-life
equipment, producer-supplied electrical accessories, and all auxiliary
items for proper disposal.
This symbol, when noted on a product enclosure or barrier, indicates
that a risk of electrical shock and/or electrocution exists.
This symbol, when noted on the product, identifies the location of the
connection for Protective Earth (ground).
This symbol, when noted on the product, identifies the location of a
fuse or current limiting device.
This symbol, when noted on the product, 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, when noted on the product, identifies the presence of a
strong corrosive or other hazardous substance and a risk of chemical
harm. 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, when noted on the product, indicated the presence of
devices sensitive to Electro-static Discharge (ESD) and indicated
that care must be taken to prevent damage with the equipment.
This symbol, when noted on the product, identifies the presence of
noxious substances and a risk of chemical harm. Only individuals
qualified and trained to work with chemicals should handle chemicals
or perform maintenance on chemical delivery systems associated
with the equipment.