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Marking & Labeling Systems Program

The Marking and Labeling Systems program covers labels (nameplates or markers) and label materials that have been submitted to UL for evaluation in accordance with prescribed permanence of marking performance requirements so they can be used to display information on products. Most products are required to be permanently marked with specific safety-related information such as hazards, warnings, cautionary markings, installation instructions, electrical ratings, etc. Labels and label materials that comply with the Marking and Labeling System requirements fall under UL's Component Recognition Program which provides a convenient way for manufacturers to acquire labels that meet performance of marking requirements applicable to their UL certified product. Marking and Labeling Systems are covered under the following four categories based on the type of product and end-use application.

Category Name

Category Code Number (CCN)

Marking & Labeling Systems


Marking & Labeling Systems - Printing Materials  


Marking & Labeling Systems -In-Mold


Marking & Labeling Systems - Materials


Marking & Labeling Systems - Limited Use


Labels and label materials Recognized under the first four category codes - PGDQ2, PGJI2, PGIM2 and PGGU2 - are tested in accordance with the test methods in ANSI/UL 969, "Marking & Labeling Systems". They are suitable for use on a wide variety of UL Certified products. Labels Recognized under the category code PGIS2 are evaluated in accordance with unique label requirements in a specific UL end-product Standard and are thus "limited in use" to the products covered under that Standard.

The evaluation for Marking and Labeling Systems includes a construction examination and testing for permanency. Environmental conditioning of labels typically includes testing for exposure to high humidity or occasional exposure to water, elevated temperatures, sunlight resistance, or exposure to chemical agents. After the environmental conditioning, the labels are visually examined for curling, wrinkling, shrinkage or loss of adhesion around the perimeter. Testing also typically includes evaluation of legibility, resistance to defacement, and adhesion.

Guidelines addressing the suitability of the label when used with an end product are included in the UL Report as "Conditions of Acceptability". The Conditions of Acceptability generally cover application surfaces, temperature ratings, and additional exposure conditions for which the label was found acceptable. The Conditions of Acceptability may also include print color limitations, label size limitations, and special use applications. The Conditions of Acceptability for labels are also published in UL's Component Online Directory.

All Recognized Component Marking and Labeling Systems are intended for application at an end-use product factory and fall under UL's Follow-Up Service (FUS) program. UL's Follow-Up Services program determines that UL certified products continue to be manufactured in compliance with UL's requirements.  

  • Marking & Labeling Systems (PGDQ2)

    Marking & Labeling Systems category covers printed labels that are manufactured by a label printer/converter. As a general rule, these labels are sold as die-cut, finished printed labels. They have not been evaluated to receive additional printing by the end-use product manufacturer. See Marking & Labeling Systems Guide Information for details.

  • Marking & Labeling Systems - Printing Materials (PGJI2)

    Marking & Labeling Systems Printing Materials category covers printed labels and unprinted stocks that have been evaluated to receive additional printing by end-use product manufacturers using thermal transfer, laser, hot stamping, or other types of simple printing equipment. Products in this category may be sold by label material suppliers in bulk roll form or by label printer/converters as die-cut labels that are either blank or preprinted leaving blank areas in which information is to be added. The additional printing inks for which the labels have been found compatible are specified in the Recognition and only those inks are considered acceptable. The additional printing is considered an optional process for printed labels. See Marking & Labeling Systems Printing Materials Guide Information for details.

  • Marking & Labeling Systems - Materials (PGGU2)

    Marking & Labeling System Materials category covers label materials that are used to make labels. Products in this category include blank label stocks, laminating adhesives, and overlaminations. These products are typically produced in bulk sizes and sold to label printers/converters for the purpose of producing printed labels for Marking & Labeling Systems and Marking & Labeling Systems Printing Materials.  See Marking & Labeling System Materials Guide Information for details.

  •  Marking & Labeling Systems, In-Mold (PGIM2)

    In Mold Marking & Labeling Systems category covers printed in mold labels that are manufactured by a label printer/converter and are intended to embed into a molded plastic part during the molding process. As a general rule, these labels are sold as die-cut, finished printed in-mold labels. They have not been evaluated to receive additional printing by the end-use product manufacturer. See Marking & Labeling Systems, In-Mold Guide Information for details.

  • Marking & Labeling Systems - Limited Use (PGIS2)

    Marking & Labeling Systems Limited Use category covers labels, cord tags (securement strap attached or flag type), and placards that have been evaluated for compliance with requirements in specific UL end-product standards where the performance requirements are either less stringent or different than those in ANSI/UL 969, "Marking and Labeling Systems." Their use is therefore limited to the types of products covered by those standards, such as enclosures for electrical equipment, power supply cords, or gate operators. See Marking & Labeling Systems Limited Use Guide Information for details on other products that can be covered under this category.

  • Label Adoption

    Label converters and printers who use Recognized label materials (label stocks, laminating adhesives, overlaminations) can receive the benefit of the Recognition established for the label material when establishing Recognition for their printed labels. This process is known as "Label Adoption."  Learn More.

  • Labels Evaluated to the Requirements of Other Standards

    While all products Recognized in PGDQ2, PGJI2, PGIM2 and PGGU2 have been evaluated in accordance with ANSI/UL 969, "Marking and Labeling Systems", some products may be additionally evaluated for specific end-use applications such as portable ladders use and fire extinguishers where the governing standard has requirements that go beyond those in ANSI/UL 969.

  • Recognition for Canada

    Under the Canadian Certification program, UL tests products to the Canadian Standard, CSA C22.2 No. 0.15, "Adhesive Labels". Since the CSA Standard includes test methods that differ from UL 969, additional testing is necessary to grant a Canadian Recognition. Products found to be in compliance with the Canadian Standard are marked with the UL Recognition Mark for Canada. Label products certified for Canada are published under category codes PGDQ8, PGJI8, PGIM8 and PGGU8.

  • Additional Information

    The inclusion of a label supplier's name in the Marking & Labeling System program does not automatically indicate the label supplier is part of the Authorized Label Supplier Program, which authorizes the suppliers to print and distribute UL Marks.

    When the UL Mark and required safety-related information are printed on the same label (referred to as a combination or custom label), the label supplier must be an Authorized Label Supplier and the label must meet the performance requirements covered by the Marking & Labeling systems program. To determine if a label supplier has coverage in both programs, search for the company name on the Online Certifications Directory.