# threshold limit value

> upper limit on the concentration in the air of a hazardous substance in the workplace, exposed on a long-term basis without adverse effects

**Wikidata**: [Q21005](https://www.wikidata.org/wiki/Q21005)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Threshold_limit_value)  
**Source**: https://4ort.xyz/entity/threshold-limit-value


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. National Library of Israel Names and Subjects Authority File
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)