Half Facepiece Reusable Respirators offer versatility for many environments and applications providing protection against particulates and a wide variety of gasses and vapors when used with approved cartridges and filters. When properly fitted and used with approved cartridges and filters, helps provide respiratory protection from a variety of gasses, vapors and particulate hazards at concentrations up to 10 times the Permissible Exposure Limit (PEL). Not for use in environments that are Immediately Dangerous to Life or Health (IDLH).