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 The UL Marks

UL MarkWhat they Are, What they Mean

     The UL Marks are some of the most recognized Logos in the US. They are the Registered Trademarks of Underwriters Laboratories Inc., an independent, not-for-profit product safety testing and certification organization. The UL Marks appear on more than 14 Billion Products Yearly. The Organization was founded in 1894 and has long been the undisputed leader in the US for Independent Product Safety Testing and is one of the most recognized and respected organizations in the World. According to their statistics, in 1998 UL evaluated almost 90,000 Products, had customers in 88 Countries and had 171 Inspection Centers Worldwide.

     There are Different types of UL Marks that mean different things. In General, a product carrying one of these Marks means that a Sample of that product had passed it's specialized testing procedures and was found to be safe when used for the purposes for which it was intended. These Products are also periodically checked by UL at the Manufacturing Facility. 

     These "Recognized" Marks are seen on components that are part of a larger product or assembly. The "c" on the mark means that it meets the requirements set forth by Canada for a component or product. If a Mark contains "c" and "us" that means it has been found to be compliant with the requirements of both Canada and the US. Such a product may contain separate Marks ("c" and "us") or a Combination Mark. 

     More information on the Organization, it's Purposes, Procedures and it's different Marks can be found at it's Website  http://www.ul.com


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