Leaving experiments unattended should be avoided as much as possible.
If this is unavoidable, the direct Supervisor must be informed and safety measures must be planned according to the following guidelines:
- The Supervisor must be notified and approve the experiment;
- Ensure that all containers and equipment are labeled according to WHMIS regulations;
- Post the “Overnight Unattended Experiment” form near the experiment (e.g. on fume hood sash);
- Provide secondary containment and shielding of the material/experiment in the event of containment failure;
- Keep laboratory door window unobstructed.
