Hazardous Locations Certifications


UL has been involved in bringing safety science best practices to hazardous locations since 1915. Today, UL's global reach and comprehensive portfolio of services provide a single point of contact for all of a customer's hazardous locations certification needs. With proven expertise in all area classifications, protection methods and product categories, UL's global team simplifies the process of bringing products for hazardous locations to market worldwide.


Product safety evaluation includes testing and certification of products that are to be installed in or related to a hazardous (classified area) location. UL can also deliver certifications of rebuilt equipment destined for a hazardous location as well as certify facilities rebuilding motors under the IECEx Scheme.


Through its global network, UL helps our customers save time and expense by eliminating the redundancy involved in obtaining hazardous locations certifications for multiple markets worldwide.

Our hazardous locations certifications determine whether a product meets applicable safety standards and provide certification and Certificates of Conformity for global markets and schemes, including:

  • ATEX
  • IECEx Scheme
  • UL Marks for the United States and Canada

UL also conducts quality systems audits supporting the issuance of hazardous locations certifications.

Quality audits are required to gain an IECEx System Certificate of Conformity or to ship Category 1 or 2 products into the European Union under the ATEX Directive. UL offers a combined IECEx System and ATEX Directive (94/9/EC) quality assessment.

INMETRO quality audits are required by Brazil for all electrical and electronic equipment used in explosive atmospheres. UL customers can opt to combine ATEX, IECEx, and INMETRO quality assessments into a single audit.


Certification and certificates:

  • UL Marks for the United States and Canada
  • ATEX
  • IECEx
  • UL Marks for the United States and Canada
  • INMETRO (for Brazil)
  • Ex (for IECEx Certificate of Conformity holders)