UL's Marks - What they look like and what they mean

International "emc-Mark"

The International "emc-Mark" appears on products meeting the electromagnetic compatibility requirements of Europe, the United States, Japan, Australia, or any combination of the four. In the United States, some types of products can't be sold without proof of compliance to U.S. electromagnetic compatibility requirements. The types of products that are subject to EMC testing include medical and dental equipment, computers, microwave ovens, televisions, radios, transmitters, and radio-controlled equipment.

Management System Registration Mark

The UL Registered Firm Mark is a mark you will never see on a product. Instead, it indicates that a particular facility has passed UL's evaluation to management system standards and is used in promotion and marketing by companies with management system programs audited by UL. The standards UL uses are the ISO 9000 series of quality assurance standards; QS-9000, the quality standards developed by the Big Three U.S. automakers for their suppliers; ISO 14001, the standard covering environmental management systems, AS9000 for aerospace quality management systems, TL 9000 for telecommunications quality management systems and SA8000 for social accountability management systems.

UL Verified Performance Mark

The UL Performance Verification Mark can be applied to Listed communications cable Verified to performance standards such as the UL Performance Category Program, ISO/IEC 11801, and NEMA WC66. It can also be applied to Listed fiber optic cable Verified to Telcordia specifications. The UL performance Verification Mark may also be applied to data transmission or optical fiber cable Verified to performance specifications only. The Verified Performance Mark signifies that telecommunications cabling products are certified for both safety and performance, and comply with industry performance standards and draft standards.

UL Performance Verification Mark - FAQs

PS<E> Mark

The PSE Mark is a mandatory mark for Japan according to the Electrical Appliance and Material Safety Law (DENAN). It is administered by the Ministry of Economy, Trade and Industry (METI). Products regulated under the DENAN law are categorized as Specified Products (SPs) and Non-Specified Products (NPSs). SPs are products that require certificates by a Conformity Assessment Body and the application of the PS<E> Mark, while NSPs are products that require mandatory compliance declared via application of the self affixed PS(E) Mark, but not necessarily via certificates from a METI Conformity Assessment Body. UL serves as a Conformity Assessment Body to help you get the mandatory Japanese PS<E> Mark as accredited by Japan's Ministry of Economy, Trade and Industry (METI) in Europe via UL International Demko, in Japan via UL APex and in the United States via UL Inc.

S-Mark

The S-Mark is the voluntary safety certification scheme administered in Japan for electrical products. The scheme started in July 1995, accompanying both the relaxation of "the Electrical Appliance and Material Control Law" and the enforcement of "the Japanese Product Liability Law". Third-party certification bodies, who are the members of "the Steering Council of Safety Certification for Electrical and Electronic Appliances and Parts of Japan (SCEA)," such as UL Apex, administer certification.

D Mark

The D-Mark is a voluntary safety mark registered and provided by UL-Demko. It has been in use for more than 70 years and is a familiar symbol to consumers as well as retailers and manufacturers in Europe.

ENEC Mark

ENEC (European Norms Electrical Certification) is a voluntary mark for luminaires, luminaire components, electrical and electronic office and IT equipment, safety isolating and separating transformers, power supply units and switches for household appliances. It certifies the compliance of a product with the harmonized European standards. ENEC is widely recognized throughout Europe. Under the ENEC program, applicants can be accepted worldwide, with the exception of luminaires, which is open to manufacturers in Europe only.

GS Mark

The UL GS Mark, issued by UL International Demko A/S, is a voluntary mark used on products such as household appliances, laboratory equipment, luminaires and IT/AV equipment. Products are evaluated according to harmonized European standards. In addition to being recognized in its primary market of Germany, the GS Mark is recognized widely throughout Europe as well as a variety of international markets. The validity of the associated GS Mark certificate is 5 years.

AR-UL Mark

Used in conjunction with the mandatory "S" Mark of Argentina's National Office of Internal Commerce (Direccion Nacional de Comercio Interior, or DNCI), the "AR-UL" Mark indicates a product's compliance with Phase III of Argentina's Resolution 92/98. Most electrical and electronic products entering Argentina will have to display the "S" Mark adjacent to the Mark of an accredited and Recognized third-party certification organization such as UL de Argentina, S.R.L. Click here to see an overview of Argentina's compliance system.

BR-UL Mark

Used in conjunction with the "INMETRO" Mark of National Institute of Metrology, Standardization and Industrial Quality in Brazil, the "BR-UL" Mark indicates that the product complies with the Brazilian standards (primarily modeled after IEC/ISO standards with some local deviations). Certification is mandatory for a list of product categories which includes: switches, plugs, socket -outlets, flexible cords, circuit breakers, wire & cables, magnetic & electronic ballast, voltage regulators, medical devices and electrical equipment for hazardous locations. Our affiliate 'UL do Brasil' is accredited to provide this certification. Voluntary certification can be obtained for all other product categories (including audio, video and information technology equipment) to differentiate your product in the competitive Brazilian market. Click here to see an overview of Brazil's compliance system.

UL-MX Mark

The UL-MX Mark is a safety mark registered and provided by UL de Mexico, S.A de C.V. It shall be used in products that have been evaluated and certified under voluntary Mexican Standards (NMX). Used in conjunction with the official "NOM" countersign it is considering as official mark. UL-MX NOM Marks are only granted when a product complies with applicable and mandatory requirements of the Official Mexican Standards (NOM) , the scheme /modality under which it has been evaluated and current Mexican legislation related to Conformity Assessment. In any case, the validity of the associated Certificate of Compliance will depend on the certification scheme applicable at the product's category (new, used, rebuilt, out of specifications, etc). Click here to see an overview of the Mexican compliance system.

UL Listing Mark

This is one of the most common UL Marks. If a product carries this Mark, it means UL found that representative samples of this product met UL's safety requirements. These requirements are primarily based on UL's own published Standards for Safety. This type of Mark is seen commonly on appliances and computer equipment, furnaces and heaters, fuses, electrical panelboards, smoke and carbon monoxide detectors, fire extinguishers and sprinkler systems, personal flotation devices like life jackets and life preservers, bullet resistant glass, and thousands of other products.

UL Listing vs. Recognition. What's the difference? -- Find out in this brief article from UL's Code Authority Newsletter.

C-UL Listing Mark

This mark is applied to products for the Canadian market. The products with this type of mark have been evaluated to Canadian safety requirements, which may be somewhat different from U.S. safety requirements. You will see this type of Mark on appliances and computer equipment, vending machines, household burglar alarm systems, lighting fixtures, and many other types of products.

C-UL US Listing Mark

UL introduced this new Listing Mark in early 1998. It indicates compliance with both Canadian and U.S. requirements. The Canada/U.S. UL Mark is optional. UL encourages those manufacturers with products certified for both countries to use this new, combined Mark, but they may continue using separate UL Marks for the United States and Canada.

Classification Mark

This mark appears on representative samples of products that UL has evaluated but only with respect to specific properties, a limited range of hazards, or suitability for use under limited or special conditions. Typically, products Classified by UL fall into the general categories of building materials and industrial equipment. Examples of types of equipment Classified by UL include immersion suits, fire doors, protective gear for fire fighters and industrial trucks.

C-UL Classification Mark

This Classification marking is used for products intended for the Canadian marketplace. It indicates that UL has used Canadian standards to evaluate the product for specific hazards or properties. Examples of C-UL Classified products include air filter units, firestop devices, certain types of roofing systems, and others.

C-UL US Classification Mark

UL introduced this new Classification Mark in early 1998. It indicates compliance with both Canadian and U.S. requirements. The Canada/U.S. UL Mark is optional. UL encourages those manufacturers with products certified for both countries to use this new, combined Mark, but they may continue using separate UL Marks for the United States and Canada.

Recognized Component Mark and Canadian Recognized Component Mark

These are marks consumers rarely see because they are specifically used on component parts that are part of a larger product or system. These components may have restrictions on their performance or may be incomplete in construction. The Component Recognition marking is found on a wide range of products, including some switches, power supplies, printed wiring boards, some kinds of industrial control equipment and thousands of other products. Products intended for Canada carry the Recognized Component mark "C."

Recognized Component Mark for Canada and the United States

This new UL Recognized Component Mark,which became effective April 1, 1998, may be used on components certified by UL to both Canadian and U.S. requirements. Although UL had not originally planned to introduce a combined Recognized Component Mark, the popularity of the Canada/U.S. Listing and Classification Marks among clients with UL certifications for both Canada and the United States has led to the new Mark.

Blue Sanitation Mark

It is optional and supplements the Classification Mark. Learn more.

EPH Product Mark

The UL EPH mark appears on products that have been evaluated to Environmental and Public Health Standards. The "Classified" version is used for products complying with ANSI/NSF Standards and other food equipment hygiene codes and requirements. Examples include Food Service and Meat and Poultry Plant Equipment. The "Listed" version is typically used for products complying with UL's own published EPH Standards for Safety.

Field Evaluated Product Mark

A Field Evaluated Product Mark is applied to a product that is thoroughly evaluated in the field instead of UL's laboratories or the manufacturer's facility. If a product has been significantly modified since its manufacture or the product doesn't bear any third-party certification mark, a building owner, a regulatory authority, or anyone else directly involved with the product can request that UL conduct tests in the field on the specific piece of equipment. Products that meet appropriate safety requirements are labeled with a tamper-resistant Field Evaluated Product Mark.

Gas-Fired Mark

UL now offers a new Gas-Fired Listing Mark to be used exclusively on gas-fired appliances and equipment. The Gas-Fired Mark indicates a product's compliance to nationally recognized gas standards, including UL, ANSI Z21/Z83 Series and CSA/CGA standards. The Gas-Fired Mark signals that a product has been evaluated to reasonably foreseeable hazards including both gas and electrical hazards. Read our Gas-Fired Mark FAQs.

Gas-Fired Marks for Canada

Gas-fired equipment evaluated to Canadian National Standards will be authorized to display the Canadian Gas-Fired Mark. For gas-fired equipment evaluated to both U.S. and Canadian Standards, the combination U.S. and Canadian Mark will be authorized.

Marine Mark

The UL Marine mark appears on products which have been evaluated specifically for marine use. Products bearing this Mark have been evaluated to UL's published Marine Safety Standards and other applicable standards and codes. These requirements address hazards that can occur as a result of exposure to harsh marine environments such as vibration, shock (impact), ignition protection, water ingress and salt spray corrosion common on pleasure craft and boats. Examples of the type of equipment suitable for the UL Marine Mark include alternators, battery chargers/power inverters, navigation lights, and fuel tanks, filters and pumps.

Plumbing Mark

The UL Plumbing Mark appears on plumbing products that have been evaluated to all applicable nationally recognized standards and have demonstrated compliance with both the International Plumbing Code (IPC) and Uniform Plumbing Code (UPC). The UL Plumbing Mark will initially appear on products covered under the category of Plumbing Fixture Fittings. This product category covers plumbing fixture fittings such as, but not limited to, faucets for sinks faucets with pullout spouts and side sprays, hand-held showers, pressure-balanced valves, and thermostatic mixing valves. These devices are intended to be installed and used in accordance with a model plumbing code (IPC or UPC). The UL Plumbing Mark will be made available to additional product categories as requested by regulators, installers, and manufacturers to address their safety concerns and business objectives.

Security Mark

The UL Security Mark appears on products evaluated to national security products standards. Typical products carrying the UL Security Mark include intrusion detectors, burglar alarms, access controls, anti-theft alarms, surveillance systems, safes and vaults. Until the UL Security Mark is fully implemented in May 2007, UL certified security products may also carry a traditional UL Listing Mark.

Signaling Mark

UL Signaling Mark appears on products evaluated to national signaling products standards. Typical products carrying the UL Signaling Mark include smoke detectors, fire alarms and hospital nurse call systems. Until the UL Signaling Mark is fully implemented in May 2007, UL certified signaling products may also carry a traditional UL Listing Mark.

Security and Signaling Mark

The UL Security and Signaling Mark appears on products that are certified for both security and signaling functions. A typical example is a combination fire and burglar alarm system, which is certified both applications. Until the UL Security and Signaling Mark is fully implemented in May 2007, these products may also carry a traditional UL Listing Mark.

Water Quality Mark

The UL Water Quality Mark appears on drinking water products evaluated to drinking water standards. The UL Water Quality Mark can be found on drinking water treatment additives, drinking water treatment/filtration units, drinking water system components and materials, and distribution and plumbing products. Until the UL Water Quality Mark is fully implemented in 2010, the UL EPH may also appear on drinking water products.