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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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Hwa Chong Institution

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Hwa chong institution

Hwa ChongInstitution

Hci science block

HCI Science Block

Hci science labs

HCI Science Labs

Hci science labs1

HCI Science Labs

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

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