The American Conference of Governmental Industrial Hygienists (ACGIH) has announced its Notice of Intended Changes (NIC) for Threshold Limit Values (TLV) and Short-Term Exposure Limits (STEL) for 2023. Although the United States uses OSHA’s Permissible Exposure Limits (PEL), the rest of the world, including Canada, uses TLVs. NICs do not mean TLVs will definitely change. ACGIH can either adopt them, remove them or keep them listed as NIC for the following year.
This year’s important NICs include:
Benzene |
|
| Current TLV – 0.5PPM | NIC TLV – 0.02PPM |
| Current STEL – 2.5PPM | NIC STEL – 0.1PPM |
Ethylene glycol dimethyl ether |
|
| Current TLV – none | NIC TLV – 0.5PPM |
Formic Acid |
|
| Current STEL – 10PPM | NIC STEL – none |
MEK |
|
| Current TLV – 200PPM | NIC TLV – 75 PPM |
| Current STEL – 300PPM | NIC STEL – 150 PPM |
Nitric acid |
|
|
Current STEL – 4 PPM |
NIC STEL – 0.025 PPM as inhalable fraction and vapor (IFV) |
If your company deals with these potential new (lower) exposure limits, we are here to assist you in meeting them. For questions on our services or to order, contact our award-winning Client Service Representatives:
- Call toll-free or text in real-time at +1 888 432 5227
- Email ehs.clientcare@sgs.com
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