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Chemical waste

A HWM technician combining compatible chemical waste in the ventilated preparation room

IMPORTANT: After disposing of your chemicals, make sure you update the quantity in your myLab chemical inventory!

Prior to accepting a chemical pickup request, a complete chemical inventory must be received from the client/customer outlining the chemicals to be picked up using a HWM Chemical Inventory Form. This procedure can be curtailed only when a complete inventory of the materials to be picked up is performed by a HWM technician prior to packaging. 

You can request a chemical waste pickup HERE

Bulk waste

The following containers must be used to hold bulk wastes:

Corrosive waste container

bulk corrosive small corrosive container
Use: Corrosive liquids
Volume: 20 litres or 10 litres
Colour code: Yellow container with red cap
Supplied with: Label

Special notes:

  • 10L containers available on special request only. Depends on availability.
  • For safety reasons, do not fill above 3/4 full.
  • DO NOT USE FOR CONCENTRATED MATERIAL or as a dilution vessel.
  • Do not mix different material in it (example: no acids and bases together).
  • Container is to be used for spent solutions ONLY.  Do not pour chemicals directly from their original containers, as we will pick those up in their original bottle.
  • Make sure the label is filled out appropriately.
  • This is a re-used container which has only been washed & decontaminated on the outside. Container is to be used only for its intended purpose.

Solvent waste container

solvent container small solvent container
Use: Solvent liquids
Volume: 20 litres or 10 litres
Color code: White container with red cap
Supplied with: Label

Special notes:

  • For safety reasons, do not fill above 3/4 full.
  • Do not mix different materials (each solvent should be segregated).
  • Do not use as a dilution vessel.
  • Make sure the label is filled out appropriately.
  • This is a re-used container which has only been washed & decontaminated on the outside. Container is to be used only for its intended purpose.

Expired/obsolete chemicals in their original containers (lab-packs)

Expired chemicals are collected, packaged, and transported using steel drums (lab-pack). A lab-pack is an open-headed drum, which is packed only with compatible materials. These items must be packed in a safe layer using a suitable packing material, which acts as an insulator, buffer and absorbent. A lab-pack is self-contained, sealed and secured by a lid, ring and bolt. A weight restriction of 80 KG/drum is observed.

Containers and packaging requirements

Only a clean, safe 45-gallon steel drum or 5 gallon steel pail may be used to package laboratory chemicals.

To ensure safe transport and storage, all chemicals must be coded and segregated into categories. Under normal circumstances, every item in a lab-pack must be inventoried including generic name, container size, actual volume, container type and chemical group.

Each lab-pack must be labelled with the following information:

  • Drum number based on the date of service.
  • Department of Transport (D.O.T.) classification
  • Packing group.
  • Proper shipping name (Transportation of Dangerous Goods Act - T.D.G.A.)
  • Chemical group.
  • Complete inventory list.

Disposal of unknown chemicals

Any unknowns that cannot be identified cannot be disposed of safely, and thus will remain the responsibility of the owner. Any analysis that must be performed will be done at the expense of the client/department.