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Approvals and Standards

The information provided on this page is for general information purposes only. Mine Safety Appliances Company does not warrant the accuracy, reliability, or timeliness of any information provided herein and shall not be liable for any losses, whether direct, indirect or consequential, resulting from reliance on such information.

PLEASE NOTE: All approval certificates are located on the respective product pages. 


What applicable standards were used to certify my MSA product?

There may be different certificates for different countries which show the different standards used. If more than one country’s standards are in the approval certificate, and it’s not clear which standards are applicable to which country, please call Customer Service: 1-800-672-2222.

In general, standards are preceded by:

  • CSA = Canada
  • EN = Europe
  • IEC = International/Australia


Where can I obtain the standards that were used to certify my MSA product?

Although some standards are free to the public, most standards will need to be purchased. For more information, visit the appropriate standard’s web site:


What if I can't find the approval certificate for my MSA product?

Even if it is not listed on the product page, the product may have the approval you need. Please call MSA Customer Service: 1-800-672-2222.


My US-approved product says Class I on it but does not have any Division marking on it. How do I know where I can install it?

The only time an unmarked Division is permitted is when the protection technique is Explosion-proof. Thus, it is suitable for installation in any hazardous (classified) locations allowed for this protection technique. Typically, this is Division 1, but it may be Division 2 if installed with Explosion-proof wiring methods.


My MSA product does not have a Temperature Class (e.g. T4) marked on it. How do I know if it is suitable for the gases present?

If no Temperature Class is marked, it is T5 or T6. The actual temperature class can be found by checking the certification or by contacting MSA Customer Service: 1-800-672-2222.