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The Skeptic's Annotated Bible
OSHA’s annotated PELs tables include a side-by-side comparison of OSHA PELs, Cal/OSHA PELs, NIOSH RELs and ACGIH ® TLVs ® . The TLVs ® in the annotated tables are reprinted with permission from ACGIH ® . See Important Note on ACGIH ® TLVs ® , which is also reprinted with permission from ACGIH ® . Cal/OSHA, NIOSH, and ACGIH have OELs in addition to those listed in the annotated tables. The annotated tables contain links to the complete OEL lists from Cal/OSHA and NIOSH. TLVs ® and BEI ® s are not publicly available, but can be purchased on ACGIH ® 's website . For the most current OELs and information on notations such as skin absorption, users should consult complete listings and explanations from Cal/OSHA, NIOSH, and ACGIH.