Do you have Particularly Hazardous Substances in your chemical inventory?

Particularly Hazardous Substances (PHS) are chemicals that pose a high risk to employees in the workplace. Work with these substances requires specialized training from your PI or supervisor, and customized standard operating procedures (SOPs) that identify designated work areas, containment devices (such as fume hoods and glove boxes), procedures for decontamination, and prior approvals before work begins.