34. Soldering irons
33. Scalpels and blades
32. Rotary evaporators
31. Pumps
30. Pulley system
29. Protein electrophoresis system
27. Organic chemicals and solvents (for example, alcohols, hexane and propanone). 28. Pollen grains
Equipment, hazardous materials and processes 26. Optical fibres
Burns, electric shock from poor earth connection or melted insulation. Danger of burn and electric shock.
Equipment involves the use of a partial vacuum. Cracking of glassware may hurt user. Sharp objects. Possibility of cuts and bodily injury.
~H-290~
Adult supervision is essential, especially when younger students are handling the equipment, store away from students' reach when not in use. Laboratory staff should ensure that equipment and cables are maintained in good condition
Moderate
Low
students are not allowed to operate this equipment alone. Heavywalled vacuum flasks should be used to avoid implosions.
Moderate
Low
Low
Moderate
Electric wiring. Short-circuiting. Electric shock Gel is toxic. structural collapse. May cause bodily injury. Electric shock.
All work must be done in a laminar flow cabinet. Ensure all containers for media, for example, Petri dishes are sealed. Metal components should not be touched. Electrodes must be connected to their respective sockets. Gels are made of neurotoxic acrylamide and must not be handled with bare hands. Gloves and lab coats must be worn. The general guideline is to exercise proper care and observe all safety precautions. The general guideline is to thoroughly understand the operating instructions before using the equipment.
Flammable liquids should be stored in steel cabinets away from heat sources. Do not store in refrigerators. Fire fighting equipment is present in each laboratory. Personal protective equipment should be worn when handling these chemicals. If heating is required, a water bath or hot plate should be used.
Moderate
Low
Handle optical fibres as glass. Fibres should be disposed carefully and not left lying around on the bench.
Existing control measures / safety guidelines
Low
Risk evaluation
Inhalation of allergens.
Fibres are transparent and brittle. Broken pieces are sharp and could pierce and penetrate the skin. The pieces may be difficult to remove from the skin. Flammable. Possibility of fire or explosion in the presence of ignition sources.
Hazard and possible accidents/health risk
School Science Laboratory Safety Regulations
Laboratory staff should regularly check for any damage to cables.
Ensure apparatus are arranged in a stable manner and positioned without obstruction. Electrical equipment should be handled with care. Equipment, switches and electrical wires must not be handled with wet hands. Do not operate in environment containing flammable gas vapours or exposed flame. Greater care should be exercised when handling ignitable samples or organic solvents.
Face masks should be worn.
Flammable liquids must be clearly labelled. If there is any spillage of flammable liquid, stop work and ventilate the surroundings. Heat and ignition sources must be turned off.