10. WHY ARE SYMBOLS
IMPORTANT?
Bär inte på egen hand, alltid
bära med två personer.
Placera inte på hårda ytor, sätta
en matta under.
Om du inte förstår
instruktionerna ringa Ikea
hjälplinjen för rådgivning.
11. WHY ARE SYMBOLS
IMPORTANT?
Do not carry on your own,
always carry using two people.
Do not place on hard surfaces,
put a rug underneath.
If you do not understand the
instructions, ring the Ikea
helpline for advice.
14. HAZARD SYMBOLS
Flammable
Refers to any
flammable chemicals
or other substances
that ignite on contact
with air, a small
ignition source, has a
low flash point or can
evolve highly
flammable gases when
in contact with water.
The symbol is a flame.
15. Oxidising
Oxidising covers
chemicals that in
their preparation,
can lead to a
dangerous
reaction with
other chemicals.
The symbol is a
flame over a
circle.
HAZARD SYMBOLS
16. HAZARD SYMBOLS
Corrosive
Chemicals that may
destroy living tissue
on contact. Matches
the previous symbol
for corrosion. The
pictogram shows
corrosion of material
and skin.
17. HAZARD SYMBOLS
Health Hazards
Chemicals that may
cause damage to
health. Also known to
mean caution. This is
the closest
replacement to the
previous harmful and
irritant classifications.
The symbol is an
exclamation mark.
18. HAZARD SYMBOLS
Serious Health Hazards
Also known to mean
long term health
hazards. These are
chemicals that can
cause serious and
long term damage to
health. The symbol
shows a person with
internal damage.
19. HAZARD SYMBOLS
Explosive
Explosives are defined
as chemicals,
substances, and any
workplace occurrence
that may cause an
explosion. The symbol
is a pictogram of an
exploding bomb.
20. HAZARD SYMBOLS
Dangerous for the
environment
This symbol warns you
that a substance can
cause damage to the
environment.
24. Let`s try to identify the present LAB equipment…
Name Drawing/Diagram Used for
25. Bunsen safety
When you are not using the burner, switch it off or close
the air hole so that other people can see the yellow
flame.
The burner gets hot! Leave it to cool down before
picking it up.
Always use a heat-resistant mat and wear safety
glasses.
Procedure:
1. Put the Bunsen burner on a heat-resistant mat.
2. Use the ring to close the Bunsen burner air hole.
3. Get a wooden splint and light it.
4. Put the burning end of the splint about 3cm above top of the burner barrel to light
the gas.
5. Turn on the gas.
6. Leave air hole closed for a visible, yellow flame.
7. Open the air hole for hotter, blue flame.
8. Open and close the Bunsen burner air hole.
9. Put the end of a wooden splint into the flame. Does it catch light quickly or take a
little time? Which flame do you think is the hottest?
