When should I Lab Pack chemicals?

Chemicals should be designated for Lab Pack disposal if they meet the following criteria:

Within six months of expiration (this should be captured on the label of the chemical container). Best practice irrespective of expiration date is to not keep hazardous chemicals for longer than five years.
When the condition of the chemical’s storage has been compromised, for example if the chemical was stored in an unsuitable temperature or without being properly sealed.
If you do not need or use the chemical regularly or it poses an unsuitable hazard risk.