INFICON 2020ppbPRO Portable Photoionization Detector - Manual (Page 103)

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5. In cases where recommended exposure limits are below the detection limit
for the compound in question, the estimated lower limit of detection has
been substituted for those values.
6. The 2020ppbPRO is not suitable for monitoring these compounds at ACGIH
recommended levels.
7. A 1000-ppm TWA has been established for those compounds which are
“Simple Asphyxiates” and for which no exposure value exists.
8. For those compounds, which lack established exposure levels, an arbitrary
value of 200 ppm has been established for the TWA, STEL and PEAK
alarms.
References
1. Maslansky, Carol J. and Steven P. Maslansky. Air Monitoring
Instrumentation. New York: Van Nostrand Reinhold, 1993.
2. American Conference of Governmental Industrial Hygienists. Threshold
Limit Values for Chemical Substances and Physical Agents and Biological
Exposure Indices (1994-1995). Reprinted with permission.
NOTE: The T LV/BEI™ publication is revised annually.
3. National Institute for Occupational Safety and Health (NIOSH).
Recommendations for Occupational Safety and Health, Compendium of
Policy Documents and Statements, January 1992.