Standard Certification Marks

GUIDE: Standard Certification Marks

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[VDE Testing and Certification Institute] [Underwriters Laboratories Inc.] [CSA International] [NEMKO] [DEMKO] [FIMKO] [SEMKO] [VARIOUS]

VDE Testing and Certification Institute
Mark Description
VDE Mark for appliances as technical equipment according to the Appliance Safety Law (GSG), for Medical Device Law (MPG), components and installation materials.The VDE Mark indicates conformity with the VDE standards or European or internationally harmonized standards resp. and confirms compliance with protective requirements of the applicable EC Directive(s). The VDE Mark is a symbol for electrical, mechanical, thermal, toxic, radiological and other hazards.
For appliances as technical equipment according to the GSG.For ready-to-use equipment, the licence holder may chose to affix the VDE Mark or the VDE GS Mark.
For products certified on the basis of harmonized certification agreements.Testing is based on harmonized European standards listed in the ENEC Agreement. Products (at present luminaires and related components, energy saving lamps, IT equipment, transformers, switches for appliances, electrical controls, certain types of capacitors and EMI suppression components) tested to tested to the listed standards may be marked with the ENEC Mark of the VDE. The approval of any other body participating in the ENEC Agreement is not required.
For appliances in compliance with standards for electromagnetic compatibility.The VDE EMC Mark expresses the conformity of a product with applicable standards for electromagnetic compatibility. The reliable function of the product in its electromagnetic environment is also included. The requirements for granting this mark comprise automatically and without restriction the compliance with applicable standards.
For cables, insulated cords, installation conduits and ducts, the VDE Cable Mark is applicable.

For cables and cords, the VDE Identification Thread may be used.
VDE-HARmonization Marking

The VDE HARmonization Marking or VDE HARmonization Thread resp. for cables and insulated cords according to harmonized certification procedures.Testing is based on the Harmonization Documents (HD) listed in the HAR Agreement. Products (harmonized power cables) tested and found in compliance with with the requirements of the mentioned standards may be marked with the VDE HARmonization Marking. Further information is available from the Laboratory for Cables and Cords, Materials and Special Tests.
The VDE Component Mark may be used for electronic components.
The CECC Mark for electronic components according to CECC Specifications.For electronic components according to CECC Specifications (CECC: CENELEC Electronic Components Committee) the CECC Mark may be used.
VDE-Reg.-Nr. (VDE Certificate of Conformity in conjunction with factory surveillance)This mark is used in two cases: firstly, for products in compliance with applicable clauses of VDE standards in the absence of a fully applicable VDE standard, and secondly, if a product, e.g. a sub-assembly, requires the fulfillment of additional conditions when incorporated into complete equipment. For cables and insulated cords, the VDE-Reg.-Nr. or the relevant mark resp. is applicable in absence of special regulations for products which were tested on the basis other standards. Special constructions and all variations of non-harmonized cables and insulated cords belong to this category of products.
Underwriters Laboratories Inc.
Mark Description
UL Listing Mark
This is one of the most common UL Marks. If a product carries this Mark, it means UL found that 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.
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 products which UL has also evaluated. Products carrying this mark have been evaluated for 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.
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.
EPH Product Mark
The UL EPH mark appear 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 and Drinking Water Additives. The "Listed" version is typically used for products complying with UL's own published EPH Standards for Safety.
Food Service Product Certification Mark
The UL Food Service Product Certification Mark is UL's Classification Mark with specific reference to the appropriate NSF International standard. In addition, at the manufacturer's option, a supplemental Mark can be applied as shown. Equipment bearing the Mark is not limited to electrical products, but also includes gas appliances and non-powered equipment. These products are commonly found in commercial food establishments, institutional food services and other locations.
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.
Facility 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 quality assurance standards and is used in promotion and marketing by companies with quality assessment 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; and ISO 14001, the standard covering environmental management systems.
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.
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..
CSA International
Mark Description
The CSA mark may appear alone or with indicators. If it appears alone, it means that the product is certified for the Canadian market, to the applicable Canadian standards.
If the CSA mark appears with the indicator "US" or "NRTL" it means that the product is certified for the U.S. market, to the applicable U.S. standards.
If this Mark appears with the indicator "C and US" or "NRTL/C" it means that the product is certified for both the U.S. and Canadian markets, to the applicable U.S. and Canadian standards.
CGA "Script"
The Canadian Gas Association (CGA) "Script" for components of gas appliances and other liquid petroleum products indicates certification to applicable Canadian standards.
A.G.A. Blue Star
The American Gas Association (A.G.A.) "Blue Star" mark for gas appliances and other liquid petroleum products indicates certification to applicable U.S. standards.
CSA Blue Star
The CSA Blue Star Mark for gas appliances and other liquid petroleum products indicates certification to applicable U.S. standards.
CGA Blue Flame
The Canadian Gas Association (CGA) "Blue Flame" mark for gas appliances and other liquid petroleum products indicates certification to applicable Canadian standards.
CSA Blue Flame
The CSA Blue Flame Mark for gas appliances and other liquid petroleum products indicates certification to applicable Canadian standards.
A.G.A. "Script"
The American Gas Association (A.G.A.) "Script" for components of gas appliances and other liquid petroleum products indicates certification to applicable U.S. standards.
Mark Description
Shows that the product is Safety Certified and when relevant, that the product is also compliant with the EMC Directive.

The well-known N-mark is a certification mark based on Nemko's own testing or results from testing performed by often labratory according to multi-national or bi-lateral agreement or by otherwise Nemko accepted labratories including all authorized manufacturers. The mark itself signifies that Nemko has tested or certified the product according to national standards official safety regulations in Norway. (which in principle are aquivalent to those of the other European EU/EEA states)
Shows that the product is tested and certified as above, but signifies clearly that the product is certified for both safety and EMC by Nemko or by a Nemko authorized labratory. In addition this mark confirms that the product also covers the EMC Directive, tested by Nemko or Nemko authorized laboratories.
The product is only certified for EMC by Nemko.
Products certified by Nemko may if desired be tagged with the unique "Nemko Approved" label for use as advertising, shows, displays packages and also on the actual products.
Mark Description
DEMKO's D-Mark represents electrical product safety for a great majority of consumers.
The D-Mark demonstrates that, from a safety point of view, the tested product complies with:
  • Harmonised standards, e.g. EN/HD
  • International standards, e.g. IEC
  • National standards, e.g. DS
  • Other national standards e.g. American National or UL Standards
  • Other relevant parts of the above-mentioned standards which form part of the basis for certification e.g. National Deviations.
DEMKO is the Competent Body for the EMC Directive and performs testing under the EMC Directive. An EMC test, in addition to an LVD test, at DEMKO gives you the right to use DEMKO's EMC Mark. The accompanying report can be used as documentation for CE Marking of your product in accordance with the EMC Directive. Safety related EMC tests under the Low Voltage and Machinery Directives should always be performed either before, or in connection with, EMC testing under the EMC Directive in order to avoid expensive double work. EMC testing at DEMKO can be monitored by the manufacturer so that any problems arising can be dealt with immediately, or DEMKO can, by agreement with the manufacturer, make any necessary changes and retest the product.
European EMC Mark
A mark for EMC has been introduced in the 15 most recognised certification bodies in Europe.
  • The CCA EMC Mark gives you the possibility to document that EMC requirements, which can often be difficult to handle, have been complied with.
  • The CCA EMC Mark is recognised by the certification bodies in the 15 countries who recognise each other's results. Full European recognition is hereby achieved.
  • The EMC Certificate is always documented by an accompanying EMC test report.
  • The EMC Mark can be used together with national safety marks as well as with the CE Mark.
Mark Description
The SGS Fimko FI mark is a well-known and respected impartial certification mark indicating the safety and quality of a product. The FI mark can only be used on products that have a valid FI certificate granted by FIMKO.
The FI mark can appear on the certified product, in the User’s Manual and Installation Guide, in product catalogues and, for example in newspaper, TV and radio advertisements. Below the FI mark our slogan ‘safe quality’ can be used to strengthen and enchance the value of the mark (see figure). More information about the use of the FI mark can be found in FIMKO’s FI handbook and on a diskette which can be obtained free of charge.
An EMC certificate issued by FIMKO is a powerful way of demonstrating the EMC conformity of the product for international markets. SGS Fimko’s EMC mark gives added value and can be used in marketing, for example on the packaging, in brochures and price lists. EMC certified products can be browsed on SGS Fimko’s website under the FI register, product lists. The EMC certificate granted by SGS Fimko requires that testing is carried out according to European standards or in a testing laboratory assessed and approved by SGS Fimko.
SGS Fimko’s EMC mark can be granted to all products which are in accordance with European standards, for example household appliances, switches for household appliances, lighting fittings, measurement instruments, electromedical equipment, IT equipment, office machines, hand-held tools and consumer electronics.
Mark Description
The S marking, which is volontary today, means that SEMKO as an impartial testing laboratory certifies that the product fulfils valid safety requirements.
The safety requirements include checking of e.g.
  • electrical safety
  • fire protection
  • mechanical hazards
  • radiation risks, e.g. of CD players and solaria
Mark Description
The CE-marking is the manufacturer's statement to the EU authorities that his product complies with all relevant CE-marking Directives. It is important to emphasise that the CE-marking is not a quality mark or a guarantee to consumers in EU.
The manufacturer is always responsible - within or outside EU - for CE-marking. If the manufacturer is not located in EU, he can authorise a representative located in EU who thus becomes responsible for CE-marking. The representative's duties and responsibilities must be agreed in writing. Importers not authorised by the manufacturer must keep his documentation in safekeeping in EU for ten years after the last production date. Please bear in mind, that the importer may always be held responsible for the documentation.
ENEC is an abbreviation for "European Norms Electrical Certification". These four letters are part of the registered trade mark that demonstrates that a product has been certified by one of the national certification institutes in Europe. Today, there are 18 certification institutes who are signatories to the agreement. Apart from the ENEC Mark itself, there is also a two digit number that indicates which certification body has issued the ENEC Certificate.
The ENEC Agreement was originally (in 1991 under the name, the LUM Agreement) started with a view to providing manufacturers of luminaires with a joint European certification mark to replace all the different national marks. In 1999, the agreement was expanded to include:
  • Lighting
  • Components for lampholders
  • IT
  • Electric office equipment
  • Safety isolating transformers
  • Isolating transformers and separating transformers
  • Power supply units
  • Switches
The GS-Mark is the German national mark that demonstrates that a product has been tested and found to comply with the standards for the product. The GS-Mark is to Germans what the Danish D-Mark is to Danes. The GS-Mark is very well recognised by German consumers; so well recognised that certain products are nearly impossible to sell without the GS-Mark.

For manufacturers and importers wishing to sell their electrical products in Germany, it is a good idea to have a GS-Mark. There are three particular areas where a GS-Mark is nearly a necessity: tools, IT equipment and electromedical equipment.
Manufacturers of tools often have a hard, if not impossible, time selling their products in Germany without a GS-Mark because such marking is supported by consumers and the trade unions. IT equipment is also effected by the requirement for GS-Marking; the mark is a requirement if you wish to sell major companies or institutions.
The third area where the GS-Mark is particularly important is electromedicine because a GS-Mark is a prerequisite for a grant to the institution in question from the German authorities.
Keymark is a European safety mark identical to the well-known systems on which the existing European CCA system is built. Some of the most important criteria for testing products under the CCA rules are: factory inspection, random sample supervision and testing performed by testing institutes of equal standing. Market supervision is performed, i.e. products are periodically sampled from the market for examination in accordance with the procedures applied by the individual countries' national bodies. The testing institute responsible for issuing the Keymark is identified by means of a numerical code which constitutes part of the Keymark itself.
Institute für Software, Elektronik, Bhantechnik
The NOM Mark is the Mexican product safety mark. Our Mexico City laboratory is an accredited SECOFI laboratory - however, you can receive testing from any one of our laboratories to receive this certification.
Warnock Mark Mark represents compliance to United States and/or Canadian product safety standards. The Warnock Hersey Mark can be found mainly on fire doors, sealed insulated glass, building materials and gas and oil fired products, like hearth products.
The GOST R certification mark is part of the mandatory Russian Certification system.
ETL Listed Mark
ETL Listed Mark represents compliance to United States and/or Canadian product safety standards. You will find the ETL Listed Mark on electrical- gas-, or oil- fired products.

For the United States, we are recognized by Occupational Safety Hazards Association (OSHA) as an National Recognized Testing Laboratory (NRTL). Click on the NRTL link to view the scope of recognition (the list of standards, sites, and programs that OSHA has recognized us for). In Canada, we are accredited by the Standards Council of Canada (SCC) as a Testing Organization and a Certification Organization.
ENERGY STAR is the symbol for energy efficiency. It's a label -- created by the U.S. Environmental Protection Agency and the U.S. Department of Energy -- to help consumers save money and prevent air pollution.

An appliance or product with the ENERGY STAR label means that it's in the top of its class for energy efficiency. Products that meet EPA and Department of Energy efficiency criteria qualify as ENERGY STAR. Consumers save money with ENERGY STAR products because they use less energy than conventional products and cost less to operate. ENERGY STAR products also offer the same or often better performance and features as conventional products.

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