Standard Interpretations
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OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.
- 1910.1450 - Applicability of OSHA standards to formaldehyde exposures in laboratories - 03/23/2017
- 1910.1450 - Applicability of the OSHA Laboratory Standard to laboratories within the electric utility industry. - 01/09/1991
- 1910.1450 - Applicable OSHA standards and safety considerations for microwave device use in a laboratory - 08/08/2002
- 1910.1450 - Chemical manipulation, production, multiple uses of chemicals in QC Labs - 01/17/1991
- 1910.1450 - Clarification regarding the frequency with which showers must be tested. - 06/21/1995
- 1910.1450 - Coverage of various types of laboratories by the Laboratory Standard - 02/08/1991
- 1910.1450 - Implementation of a comprehensive chemical hygiene plan for lab operations - 04/24/1991
- 1910.1450 - Labeling in Laboratory - 03/12/2012
- 1910.1450 - Laboratory Standard's application in testing building products - 01/16/1991
- 1910.1450 - Occupational Exposure to Hazardous Chemicals in Laboratories. - 11/01/1990
- 1910.1450 - OSHA standards applicable to medical and safety uses of pure nitrogen gas - 10/29/2020
- 1910.1450 - QC Labs conduct physicochemical analyses with no altering relating to Quality Control - 01/03/1991
- 1910.1450 - Quality control laboratories are not expected to be covered under the Laboratory Standard - 10/11/1990
- 1910.1450 - Time and resources needed to comply with Lab Standard is justifiable - 04/19/1991
- 1910.1450(a) - Applicability of the Laboratory Standard; MSDS and labeling requirements. - 05/28/1999
- 1910.1450(a)(1) - Labeling of secondary containers in laboratories under the Hazard Communication standard - 11/10/2014
- 1910.1450(a)(1) - The laboratory standard does not apply to a pharmacy operation mixing cytotoxic drugs. - 06/22/1990
- 1910.1450(a)(2) - Applicability of OSHA standards to formaldehyde exposures in laboratories - 03/23/2017
- 1910.1450(b) - Interpretation of "high degree of acute toxicity" under the laboratory standard - 07/30/1990
- 1910.1450(b) - Labeling of secondary containers in laboratories under the Hazard Communication standard - 11/10/2014
- 1910.1450(b) - Whether employers may designate an outside consultant as the Chemical Hygiene Officer under 1910.1450. - 02/15/2008
- 1910.1450(d) - Applicability of OSHA standards to formaldehyde exposures in laboratories - 03/23/2017
- 1910.1450(e) - Labeling of small containers in the laboratory - 09/03/2015
- 1910.1450(e)(3)(vii) - Applicable OSHA standards and safety considerations for microwave device use in a laboratory - 08/08/2002
- 1910.1450(e)(3)(viii) - Interpretation of "high degree of acute toxicity" under the laboratory standard - 07/30/1990
- 1910.1450(g)(1)(ii) - Applicability of OSHA standards to formaldehyde exposures in laboratories - 03/23/2017
- 1910.1450(h)(1) - Labeling of small containers in the laboratory - 09/03/2015
- 1910.1450(h)(1)(i) - Labeling of secondary containers in laboratories under the Hazard Communication standard - 11/10/2014
- 1910.1450(h)(1)(i) - Labeling requirements under the HAZCOM and Laboratory standards;use of safe needle devices. - 01/11/2001