1.2.1. Rules and regulations of laboratory
a) Don’t engage in practical jokes or unruly conduct in the laboratory
b) Never run in the laboratory
c) Carrying out unauthorized experiment is strictly forbidden.
d) Never work in the laboratory without the supervision of a teacher
e) Always perform the experiment or work precisely as directed by the teacher
f) Immediately report any spills, accidents or injures to the teacher or lab-technician in charge
g) Never leave an experiment in progress
h) Be careful when handling hot glassware and apparatus in the laboratory. Hot glassware look like cold glassware.
i) Never point the open side of the test tube containing substances at yourself or others.
j) Turn off all heating apparatus, gas valves and water taps when not in use.
k) Do not remove any equipment or chemicals from the laboratory.
l) Keep your work area neat and of any unnecessary objects.
m) Never eat or drink in the laboratory
n) Always wear an appropriate eye protection (i.e. goggles) when in the laboratory.
Know this/ - Hazardous materials: are substances that are chemical, physical or biological in nature and if released, can cause a potential risk to life, health or property.
1.2.2. Some hazard symbols of laboratory equipment
Hazard symbol
Indications
Flammable
It shows chemicals that can catch fire in contact with air. It needs only brief contact with an ignition source, or evolve highly flammable gases when in contact with water.
Dangerous for the environment
It shows chemicals that can present an immediate or delayed danger to one or more components of the environment.
The symbol shows chemicals that can cause damage to health
Irritant
The symbol shows chemicals that can cause inflammation to the skin or mucus membranes.
Explosive
It shows chemicals that can explode.
Corrosive
The symbol shows chemicals that can destroy living tissue on contact.
Oxidizing
The symbol shows chemicals that react exothermically with other chemicals
Carcinogen
It shows chemicals which cause severe chronic illnesses.
High voltage
It shows the place where there is the electric current and you can get electric shocks when you are in direct contact.
Very Toxic
The symbol shows chemicals that at very low level cause damage to health.