PGJI2 & PDGQ2 Certifications
UL Labeling Systems for In-House and Supplier Printing
What They Mean and Why They Matter
When electrical parts are manufactured, labeling is more than just identification—it is a critical part of regulatory compliance. Two common certifications related to product labels and markings are PGJI2 & PDGQ2, both are recognized under the certification programs of UL Solutions. Understanding these certifications helps manufacturers ensure their labels meet safety, durability, and regulatory requirements.
PGJI2 Refers to UL Recognized Label Material
PGJI2 covers UL-Recognized label materials that manufacturers can print in-house. The material, printer, and ribbon are tested together as a system so that variable information—like barcodes, serial numbers, warnings—remain legible and permanent in the product’s real-world environment. This allows flexibility without sacrificing UL compliance. This approach supports leaner inventory, faster product changes, and better control over production scheduling while still aligning with the requirements of UL 969 for durability and performance.
PGJI2 also creates a clear framework of responsibility between the label supplier and the manufacturer. The supplier is responsible for providing the UL-recognized material and defining compatible print methods, inks, and application surfaces, while the manufacturer is responsible for using that system exactly as recommended by UL. When both sides meet these obligations, the result is a labeling process that supports consistent quality, helps reduce compliance risk, and gives manufacturers confidence that the labels on their finished products will perform as expected in the field.
What is Required for PGJI2 Certification?
Under PGJI2, the manufacturer carries direct responsibility for staying in UL compliance every time a label is printed in-house. That means consistently using a UL-recognized label material, printing with an approved thermal transfer printer, and pairing it with a UL-approved ribbon that has been specifically tested with the exact label material—no substitutions or exceptions. When manufacturers strictly follow this evaluated material + printer + ribbon system, they help ensure that all printed information remains legible and permanent in the product's actual operating environment, supporting both safety and regulatory requirements over the life of the equipment or product.
SixB can support your in-house UL labeling program by supplying the full, compliant system you need—from UL-recognized label materials to compatible thermal transfer printers and ribbons. Our team helps you match the correct material, printer, and UL-approved ribbon so your PGJI2 labeling stays within UL specifications, streamlines production, and delivers durable, legible print that performs in your product’s real-world environment.
PDGQ2 Refers to UL Recognized Printed Labels
PDGQ2 refers to UL-Recognized printed labels that are fully produced by an authorized label supplier rather than printed in-house by the manufacturer. Under this category, UL evaluates the complete, finished label as a system—including materials, adhesive, inks, and any lamination—to confirm it will stay legible and securely adhered to the product in its real-world environment. 