Schedule 1 (Health & Safety Executive (UK) (HSE, 2005) of the Control of Substances Hazardous to Health (COSHH) Regulations specifies a Workplace Exposure Limit (WEL) of 20 mg m3, 8 h time-weighte...Raulf-Heimsoth, M., and X. Baur. 1998. Pathomechanisms and pathophysiology of ...