In September 2017, ISA 12.12.01 was updated to UL 121201, 9th Edition. This update brings several changes that will simplify the certification process for Class I, II, and III Division 2 devices.

The most significant revisions are regarding the acceptance of US/CAN Zone 2 and Zone 22 certifications, the international warning symbol (the triangle symbol with an exclamation point), and sealed deviceswhich will give manufacturers greater flexibility in achieving Division 2 certification. This change will allow devices conforming to the ISA/UL 60079 or CSA 60079 series of standards to be acceptable without additional evaluation to UL 121201.

Leverage UL’s relationships and brand recognition with local certification staff to help understand local regulations and obtain local certification marks using your UL, C-UL, INMETRO, IECEx, or ATEX certifications. Learn more here.