Label tape Brady M21-375-7425 — white polypropylene, 9.5 mm × 6.4 m

Brady M21-375-7425 is a white polypropylene label tape supplied in a black all-in-one cartridge. The tape is 9.5 mm wide and 6.4 m long and is designed for use with compatible Brady label printers to produce durable identification labels, cable markers and component tags. Constructed from matte white polypropylene (B-7425) with an acrylic adhesive and thermal-transfer printable surface, this tape is suitable for general-purpose barcode applications and for use in demanding environments including liquid nitrogen and autoclave conditions.

Advantages

The polypropylene material provides a balance of flexibility and resistance to chemicals, moisture and extreme temperatures while maintaining printable clarity for barcodes and text. The matte white finish reduces glare for easier scanning and reading. An integrated cartridge design includes both labels and ribbon, simplifying installation and ensuring correct ribbon-to-label alignment for consistent print quality. The acrylic adhesive offers reliable adhesion to a variety of surfaces common in laboratory, industrial and office settings.

Suitable for

• Identification of vials, centrifuge tubes and test tubes in laboratory environments
• Durable cable and wire marking in industrial installations
• Component and asset tagging for electronics and maintenance
• General-purpose barcode labeling for inventory and traceability

Key specifications

• Material: matte polypropylene with acrylic adhesive
• Printable method: thermal transfer
• Label width: 9.5 mm
• Label length per roll: 6.4 m
• Color: white face for high-contrast printing
• Cartridge type: all-in-one with integrated ribbon and label supply
• Resistance: suitable for exposure to liquid nitrogen and autoclave conditions

How to use

Install the all-in-one cartridge into a compatible Brady label printer according to the printer manufacturer’s instructions. Create label layouts using the printer software, selecting thermal-transfer print settings and appropriate ribbon type if prompted. Print labels and allow a brief drying time if required by the chosen ribbon and printer settings. Apply labels to clean, dry surfaces and press firmly to ensure full adhesive contact. For cylindrical items such as tubes, wrap the label smoothly to avoid air pockets.

Usage recommendations

For best results in laboratory applications, apply labels to surfaces that are free of frost, oils and residues; store printed labels away from direct UV exposure to preserve contrast. When labeling small-diameter tubes, use shorter label lengths and verify barcode readability after application. Verify compatibility with your specific Brady printer model before use and follow safety procedures when working in cryogenic or autoclave environments.