It is forbidden to bring and consume food (including chewing gum) or drinks.
It is forbidden to smoke, spit or chew tobacco in the practical work room
Listen to the supervisor's instructions
Handle Bunsen burners with care
IF THE FLAME EXTINGUISHES, TURN OFF IMMEDIATELY THE GAS VALVE AND CALL THE SUPERVISOR!
Handle seeded Petri dishes with care
This helps avoid contamination of people and equipment.
Be careful of the possibility of splashes, spills, overflowing, etc.