But, cognizant authorities have established
threshold limit values (TLVs) for many impact-mixture constituents and ACGIH has established a target limit of 1.
Hence, the
threshold limit value over a time-weighted average (TLV-TWA) for formaldehyde is the time-weighted average concentration for an 8-hour day and a 40-hour workweek to which workers may be repeatedly exposed without adverse effect.
The BEI is a biomarker that correlates to the American Conference of Governmental Industrial Hygienists' 8-hour
threshold limit value (ACGIH TLV) of 50 ppm (3).
3], the American Conference of Governmental Industrial Hygienists (ACGIH)
threshold limit value ceiling (TLV-C) is 0.
The American Conference of Governmental Industrial Hygienists has issued a Notice of Intended Changes to its
Threshold Limit Value for wood dust.
Meanwhile, the American Conference of Governmental Industrial Hygienists (ACGIH) has published a notice of intended change that would lower its
threshold limit value of 2.
3])
threshold limit value for both hardwood dust, which it classifies as Group 1: Carcinogenic to Humans, and softwood dust, which is classified under Group 4: Not Classifiable as a Human Carcinogen.
If non-industrial standards or guides have not been established for a contaminant, the industrial-hygiene profession customarily recommends a guideline of one-tenth the ACGIH
threshold limit value.
3])
threshold limit value (TLV) on occupational exposures for both hardwood dust, which it lists as an "Al - Confirmed Human Carcinogen," and softwood dust, which it lists as an "A4 - Not Classifiable as a Human Carcinogen.
The CEL is the lowest of the short-term exposure limit (STEL) of the American Conference of Governmental Industrial Hygienists (ACGIH), 2X the ACGIH
threshold limit value (TLV), or 1% of the [LC.
The lead content of air in Garage I has almost reached the
threshold limit value (TLV) for lead.
