What Are the Regulatory Guidelines for Chlorine Gas?
Various regulatory bodies have established guidelines for safe levels of chlorine gas exposure. The Occupational Safety and Health Administration (OSHA) sets the permissible exposure limit (PEL) for chlorine gas at 1 part per million (ppm) as a ceiling limit. The American Conference of Governmental Industrial Hygienists (ACGIH) recommends a Threshold Limit Value (TLV) of 0.5 ppm as an 8-hour time-weighted average (TWA) and a short-term exposure limit (STEL) of 1 ppm.
