Each laboratory is to maintain an inventory of the chemicals stored in the laboratory as part of the lab safety plan. Designate a storage place for each chemical, and return it to that place after each use. Store chemicals by hazard class, not the alphabet, and post storage areas to show the exact location of the chemical groups. Inspect chemical storage areas at least annually for outdated or unneeded items, illegible labels, leaking containers, etc. See Chapter 12: Management of Laboratory Wastes for advice on disposing outdated or unneeded chemicals. For advice on developing an inventory, please review Appendix 2-A.

Figure 4.1
Examples of chemicals in poor condition, that you should NOT keep stored in your lab:

  • Expired/outdated chemicals
  • Illegible/removed labels
  • Degraded containers
  • Leaking lids