STEL 06
STEL 06 : Short Term Exposure Limit STEL refers to a safe level of exposure (See also: TLV) from inhalation for a continuous period of time that is short (by OSHA standards either a 15 minutes or 5 minutes of continuous exposure). The concentration established by the STEL (usually in ppm) should not be exceeded during that period of exposure, and further, the time limit of continuous exposure should not be exceeded, else there is a health risk