1910.1450(a): Scope and application
Key takeaways
- 1910.1450(a) is part of OSHA's general industry standards (29 CFR Part 1910).
- Related part: 1910.1450(a)(2).
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In this article
What this rule covers
29 CFR 1910.1450(a) ("Scope and application") is one requirement inside 1910.1450 Occupational exposure to hazardous chemicals in laboratories, an OSHA general industry standard (Part 1910). It includes 10 sub-paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(a) Scope and application.
(1) This section shall apply to all employers engaged in the laboratory use of hazardous chemicals as defined below. Open (a)(1)
(2) Where this section applies, it shall supersede, for laboratories, the requirements of all other OSHA health standards in 29 CFR part 1910, subpart Z, except as follows: Open (a)(2)
(i) For any OSHA health standard, only the requirement to limit employee exposure to the specific permissible exposure limit shall apply for laboratories, unless that particular standard states otherwise or unless the conditions of paragraph (a)(2)(iii) of this section apply.
(ii) Prohibition of eye and skin contact where specified by any OSHA health standard shall be observed.
(iii) Where the action level (or in the absence of an action level, the permissible exposure limit) is routinely exceeded for an OSHA regulated substance with exposure monitoring and medical surveillance requirements, paragraphs (d) and (g)(1)(ii) of this section shall apply.
(3) This section shall not apply to:
(i) Uses of hazardous chemicals which do not meet the definition of laboratory use, and in such cases, the employer shall comply with the relevant standard in 29 CFR part 1910, subpart Z, even if such use occurs in a laboratory.
(ii) Laboratory uses of hazardous chemicals which provide no potential for employee exposure. Examples of such conditions might include:
(A) Procedures using chemically-impregnated test media such as Dip-and-Read tests where a reagent strip is dipped into the specimen to be tested and the results are interpreted by comparing the color reaction to a color chart supplied by the manufacturer of the test strip; and
(B) Commercially prepared kits such as those used in performing pregnancy tests in which all of the reagents needed to conduct the test are contained in the kit.
Source: eCFR, text current as of 2026-10-15. Read all of 1910.1450.
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OSHA interpretation letters
None exist. OSHA has not published a letter of interpretation for 1910.1450(a).
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About this page
Sources
- 29 CFR 1910.1450 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.
