STUDENT SAFETY SHEETS
91
Safety signs & symbol letters
The hazard symbols on the left hand side are being phased out: see Student Safety Sheet 91a for the new ones.
Individual Student Safety Sheets will be updated as more information becomes available.
T
TOXIC
DANGER
Xn
HARMFUL
RISK OF ELECTRIC SHOCK
C
CORROSIVE
RADIOACTIVE
Xi
LASER RADIATION
IRRITANT
E
BIOHAZARD
EXPLOSIVE
O
YOU MUST WEAR EYE PROTECTION
OXIDISING
F+
YOU MUST WEAR PROTECTIVE GLOVES
EXTREMELY FLAMMABLE
F
YOU MUST NOT HAVE NAKED FLAMES
HIGHLY FLAMMABLE
(No symbols required)
YOU MUST NOT DRINK THIS WATER
FLAMMABLE
N
DANGEROUS FOR THE ENVIRONMENT
Note:
YOU MUST NOT USE WATER TO PUT OUT FIRES
Symbols inside squares are to be used only on bottles and other containers.
Safety signs which are circular are mandatory (you MUST) or prohibitory (you MUST NOT).
Symbol-letters may be used in written documents but not on labels.
Colour code: triangular signs have a yellow background; square ones an orange background; mandatory
signs have a white pictogram on a blue background; prohibitory signs have a black pictogram on a white
background, with red edging and diagonal line.
For further information, consult the latest edition of the CLEAPSS Hazcards or Laboratory Handbook
© CLEAPSS 2011