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About This Item

 

Full Description

The information in this user-friendly, pocket-sized publication is used worldwide as a guide for evaluation and control of workplace exposures to chemical substances and physical agents. Threshold Limit Value (TLV) occupational exposure guidelines are recommended for more than 700 chemical substances and physical agents. There are more than 50 Biological Exposure Indices (BEIs) that cover more than 80 chemical substances. Chemical Abstract Service (CAS) registry numbers are listed for each chemical. Introductions to each section and appendices provide philosophical bases and practical recommendations for using TLVs and BEIs).

TLV-CS

  • Endotoxins NIC is proposed
  • Glyphosate is adopted with an A4 carcinogen designation
  • Tertiary Butyl Hydroperoxide NIC is proposed with an A2 carcinogen designation

BEI

  • Xylenes BEI lowers the existing BEI

PAC

  • Proposed revisions to the Infrasound and Low-Frequency Sound TLV update the TLVs table and the cited literature
 

Document History

  1. Threshold Limit Values for Chemical Substances and Physical Agents & Biological Exposure Indices


    Threshold Limit Values for Chemical Substances and Physical Agents & Biological Exposure Indices

    • Most Recent
  2. 2023 TLVs and BEIs

    👀currently
    viewing


    2023 TLVs and BEIs

    • Historical Version
  3. 2022 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)


    2022 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)

    • Historical Version
  4. 2021 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)


    2021 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)

    • Historical Version
  5. 2020 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)


    2020 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)

    • Historical Version
  6. 2019 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)


    2019 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)

    • Historical Version
  7. 2016 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)


    2016 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)

    • Historical Version
  8. 2014 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)


    2014 Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs)

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. 2023 TLVs and BEIs Errata

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    2023 TLVs and BEIs Errata