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Hwa Chong Institution. HCI Science Block. HCI Science Labs. HCI Science Labs. School Science Laboratory. Safety regulations. Important Notice to Pupils. Pupils must not enter the laboratory unless a teacher is present. Important Notice to Pupils.

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school science laboratory

School Science Laboratory

Safety regulations

important notice to pupils
Important Notice to Pupils
  • Pupils must not enter the laboratory unless a teacher is present.
important notice to pupils1
Important Notice to Pupils
  • Wait outside the laboratory quietly until your teacher allows you to go in.
important notice to pupils2
Important Notice to Pupils
  • If teachers are not present please contact Lab Staff at 6467 3005 for any enquiries.
important notice to pupils3
Important Notice to Pupils
  • Put your bags on the shelf provided before practical lessons.
important notice to pupils4
  • Apparatus or chemicals are to be used only in the laboratory and must not be removed from the laboratory without the permission of a teacher.
important notice to pupils5
  • Laboratory materials and equipment must be used only for purposes instructed and approved by the teacher-in charge. You are not allowed to go beyond the instructions of the teacher in any experiment.
important notice to pupils6
Important Notice to Pupils
  • All apparatus must be carefully examined before use. If you receive dirty or broken apparatus, report it to the teacher at once.
important notice to pupils7
Important Notice to Pupils
  • Nothing should be tasted without the instructions of the teacher.
important notice to pupils8
Important Notice to Pupils
  • Anything accidentally taken into the mouth must be spat out at once and the mouth rinsed with plenty of water.
important notice to pupils9
Important Notice to Pupils
  • Breakages and accidents, however slight, must be reported at once to the teacher.
important notice to pupils10
Important Notice to Pupils
  • You should wear safety goggles for all practical work involving chemicalsand heat.
chemical spill
Chemical Spill
  • Warn laboratory users.
  • Contain / cover spill with paper towels.
  • Open windows to ventilate.
  • Alert teacher / lab staffs.
biological spills
Biological Spills
  • Warn laboratory users
  • Cover spill with paper towels.
  • Pour Disinfectant over spill.
  • Alert teachers / lab staffs
major injury
Major Injury
  • Give first aid at once.
  • Call ambulance --- 995
  • Alert the school Office.

Minor Injury

  • Give first aid.
  • Alert the school office.
possible accidents in the lab
Possible Accidents in the lab
  • Minor Injury – Cuts and Burns.
  • Chemical spillage into eyes.
  • Fire.
minor injury cuts and burns
Minor Injury – Cuts and Burns
  • First Aid Box near the white board.
chemical spillage into eyes shower eye washer
Chemical spillage into eyes. (Shower & Eye washer).
  • Any spillage of chemicals on the skin or clothing must be washed at once with much water.
fire fire extinguisher
Fire (Fire extinguisher)
  • Located near the white board and at the back of the lab.
to operate fire extinguisher
To operate Fire Extinguisher
  • Pull the pin at the top of the extinguisher that keeps the handle from being accidentally pressed.
to operate fire exinguisher
To operate Fire Exinguisher
  • Aim the nozzle toward the base of the fire. Stand about 3 m from the fire.
to operate fire exinguisher1
To operate Fire Exinguisher
  • Squeeze the handle to discharge the extinguisher. If you release the handle, the discharge will stop.
to operate fire exinguisher2
To operate Fire Exinguisher
  • Sweep the nozzle back and forth at the base of the fire. After the fire appears to be out, watch it carefully since it may re-ignite!
fire blanket
Fire Blanket
  • Located near the front door.

To use

  • Pull tapes.
  • Hold blanket in shield position.
  • Place gently over fire to cover burning material completely.
  • Leaved covered until cool.
other precautions
Other Precautions
  • Use plastic cup (with handles) to collect hot water.
handling hazardous chemicals
Handling Hazardous chemicals
  • For all practical work involving hazardous chemicals must be done in the fume cupboard.
  • Wear goggles and use test tube holders.
precaution on heating
Precaution on Heating
  • Do not face the test-tube towards yourself or others.
  • Goggles must be worn at all times.
  • Never heat flammable substances.
  • Never leave a flame unattended.
handling animal work
Handling animal work
  • Wear gloves when doing animal work.
  • Handle the sharp dissection tools with care.
  • After dissection of animals, autoclave the carcasses before disposing.
electricity safety
Electricity Safety
  • Switches or electrical cables must never be handled with wet hands.
  • Do not use any electrical appliance with exposed wires, report to teachers immediately.
to evacuate
To Evacuate
  • In the emergency of chemical spills (eg. Conc.HCl, Conc. sulfuric acid, bromine water).
  • Gas leakage.
  • When the fire alarm goes off.
to evacuate1
To Evacuate
  • Report to teachers and lab staffs immediately.
  • Evacuate the lab from the front doors down to the nearest staircase to assemble at the terraces.
emergency contact no
  • POLICE………………….. 999
  • SCHOOL OFFICE…..64665912 / 64683955
  • Non-Emergency Ambulance Service…


  • http://www.northcountyfire.org/sections/safety/extinguisher.htm