UL Melville, New York location
Business units
UL formed five business units in 2010 to better meet the evolving needs of the marketplace. These units are: Product Safety, Verification Services, Life & Health, Knowledge Services and Environment.
History
Underwriters Laboratories Inc. was founded in 1894 by William Henry Merrill. Early in his career as an electrical engineer in Boston, a 25 year old Merrill was sent to investigate the World Fair’s Palace of Electricity. Upon seeing a growing potential in his field, Merrill stayed in Chicago to found Underwriters Laboratories.
Merrill soon went to work developing standards, launching tests, designing equipment and uncovering hazards. Aside from his work at UL, Merrill served as the National Fire Protection Association’s secretary-treasurer (1903–1909) and president (1910–1912) and was an active member of the Chicago Board and Union Committee. In 1916, Merrill became UL’s first president.
UL published its first standard, “Tin Clad Fire Doors,” in 1903. The following year, the UL Mark made its debut with the labeling of a fire extinguisher. In 1905, UL established a Label Service for certain product categories that require more frequent inspections. UL inspectors conducted the first factory inspections on labeled products at manufacturers’ facilities—a practice that remains a hallmark of UL’s testing and certification program.
UL has expanded into an organization with 64 laboratory, testing and certification facilities serving customers in 104 countries. It has also evolved from its roots in electrical and fire safety to address broader safety issues, such as hazardous substances, water quality, food safety, performance testing and environmental sustainability.
UL Standards
Sustainability Standards
- UL 106, Standard for Sustainability for Luminaires (under development)
- UL 110, Standard for Sustainability for Mobile Phones
Standards for Electrical and Electronic Products
- UL 153, Portable Electric Lamps
- UL 197, Commercial Electrical Cooking Appliances
- UL 796, Printed-Wiring Boards
- UL 1492, Audio/Video Products and Accessories
- UL 1598, Luminaires
- UL 1642, Lithium Batteries
- UL 1995, Heating and Cooling Equipment
- UL 6500, Audio/Video and Musical Instrument Apparatuses for Household, Commercial and Similar General Uses
- UL 60065, Audio, Video and Similar Electronic Apparatuses: Safety Requirements
- UL 60335-1, Household and Similar Electrical Appliances, Part 1: General Requirements
- UL 60335-2-24, Household and Similar Electrical Appliances, Part 2: Particular Requirements for Motor Compressors
- UL 60335-2-3, Household and Similar Electrical Appliances, Part 2: Particular Requirements for Electric Irons
- UL 60335-2-34, Household and Similar Electrical Appliances, Part 2: Particular Requirements for Motor Compressors
- UL 60335-2-8, Household and Similar Electrical Appliances, Part 2: Particular Requirements for Shavers, Hair Clippers and Similar Appliances
- UL 60950, Information Technology Equipment
- UL 60950-1, Information Technology Equipment - Safety, Part 1: General Requirements
- UL 60950-21, Information Technology Equipment - Safety, Part 21: Remote Power Feeding
- UL 60950-22, Information Technology Equipment - Safety, Part 22: Equipment to be Installed Outdoors
- UL 60950-23, Information Technology Equipment - Safety, Part 23: Large Data Storage Equipment
Life Safety Standards
- UL 217, Single- and Multiple- Station Smoke Alarms
- UL 268, Smoke Detectors for Fire Protective Signaling Systems
- UL 268A,Smoke Detectors for Duct Application
- UL 1626, Residential Sprinklers for Fire Protection Service
- UL 1971, Signaling Devices for the Hearing Impaired
Standards for Building Products
- UL 10A, Tin-Clad Fire Doors
- UL 20, General-Use Snap Switches
- UL 486E, Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors
- UL 1256, Fire Test of Roof/Deck Constructions
Standards for Industrial Control Equipment
- UL 508, Industrial Control Equipment
- UL 508A, Industrial Control Panels
- UL 508C, Power Conversion Equipment
Standards for Plastic Materials
- UL 94, Tests for Flammability of Plastic Materials for Parts in Devices and Appliances
- UL 746A, Polymeric Materials: Short-Term Property Evaluations
- UL 746B, Polymeric Materials: Long-Term Property Evaluations
- UL 746C, Polymeric Materials: Use in Electrical Equipment Evaluations
- UL 746D, Polymeric Materials: Fabricated Parts
- UL 746E, Polymeric Materials: Industrial Laminates, Filament Wound Tubing, Vulcanized Fiber and Materials Used in Printed-Wiring Boards
- UL 746F, Polymeric Materials: Flexible Dielectric Film Materials for Use in Printed-Wiring Boards and Flexible Materials Interconnect Constructions
Standards for Wire and Cable
- UL 62, Flexible Cords and Cables
- UL 758, Appliance Wiring Materials
- UL 817, Cord Sets and Power Supply Cords
- UL 2556, Wire and Cable Test Methods
Standards for Canada developed by ULC Standards, a member of the UL family of companies
- CAN/ULC-S101-07, Standard Methods for Fire Endurance Tests of Building Construction and Materials
- CAN/ULC-S102-10, Standard Methods of Test for Surface-Burning Characteristics of Building Materials and Assemblies
- CAN/ULC-S102.2-10, Standard Methods of Test for Surface-Burning Characteristics of Flooring, Floor Coverings, and Miscellaneous Materials and Assemblies
- CAN/ULC-S104-10, Standard Methods for Fire Tests of Door Assemblies
- CAN/ULC-S107-10, Standard Methods for Fire Tests of Roof Coverings
- CAN/ULC-S303-M91 (R1999), Standard Methods for Local Burglar Alarm Units and Systems
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