The "laboratory hazards" poster is to provide University of Waterloo Police and Waterloo Fire Rescue quick and easily understood information about the various chemical and physical hazards in you laboratory.


The chemical hazard poster is to be located adjacent to the doors of all laboratories containing the following items:

Material Quantity limit Example
Flammable liquids More than 10L Acetone, ethanol
Flammable solids Any Nitrocellulose membranes
Spontaneously combustible Any Phosphorous
Water reactive Any Sodium metal
Oxidizing Any more than 10L Hydrogen peroxide
Organic peroxides More than 250 ml epoxy hardeners
Poisonous More than 10L Sodium cyanide
Corrosive More than 10L Hydrochloric and sodium hydroxide
Nano material Any


Material in the size range of the size range from approximately 1nm to 100nm.

Non-flammable and non-toxic Any more than 1 large cylinder Helium
Flammable Any Hydrogen
Poisonous Any Hydrogen sulfide
Oxidizing Any Oxygen
Corrosive Any Ammonia
Biohazard Use of human blood or bodily fluids Permit issued by Biosafety safety committee
Magnetic fields 1 Telsa NMR
High voltage More than 750 volts 30 amps or more
Cryogenic liquids 10L Liquid nitrogen

Poster instructions

The poster is an Interactive PDF located at:

Laboratory hazards poster (PDF)

  1. Save the poster to your hardrive or desktop.( some browsers do not work well with interactive PDF files).
  2. Open with Adobe Reader XI works well.
  3. Click on "No" to remove a hazard from the poster.
  4. Click on "Yes" to add the hazard to the poster.
  5. Complete the contact information.
  6. Save poster for further modification.
  7. Once you have completed the poster Print in colour or send as attachment to
  8. It will be printed and forwarded to you via interoffice mail.

If you have any questions please contact the Safety Office at ext. 33587.