BRADY™ Self-laminating Cryogenic Labels with Ribbon for M21 Printers

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Specifications:
Application Sample Collection
Storage Temperature Room Temperature
Product Type Labellers
Product Brand BRADY
Product Grade Laboratory grade

Brady’s range of Cryogenic Laboratory Label Cartridges for M21 Printers provides unmatched durability, chemical resistance, and temperature stability for labeling vials, tubes, slides, and cryogenic containers.

Both B-461 Self-Laminating Cryogenic Polyester and B-7425 Chemical-Resistant Cryogenic Polypropylene materials are engineered for demanding laboratory environments—from liquid nitrogen storage (-196 °C) to autoclave sterilization (+130 °C).

Each cartridge includes a Brady Authentic ribbon, ensuring consistent print performance, immediate usability, and long-lasting identification results with Brady’s M21 handheld label makers.

Material Options

1️⃣ B-461 – Self-Laminating Cryogenic Polyester Labels

For ultimate protection of printed information in cryogenic, chemical, and autoclave conditions.

A clear overlaminate securely seals the print area, providing a permanent barrier against solvents, abrasion, and condensation.

Key Features

  • Self-Laminating Design: Transparent film covers text and barcodes for maximum protection.
  • Extreme Durability: Maintains adhesion and legibility from -320 °F to +266 °F (-196 °C to +130 °C).
  • Solvent & Chemical Resistant: Withstands alcohols, detergents, and lab solvents.
  • Permanent Acrylic Adhesive: Bonds tightly to glass, stainless steel, and polypropylene tubes.
  • Ideal For: Cryogenic storage vials, centrifuge tubes, slides, and small sample containers.

Available Sizes – B-461 Material

Part NumberLabel Width × LengthRoll LengthDescription
M21-375-4610.375 in (9.53 mm) × 21 ft (6.4 m)21 ftSelf-laminating cryogenic polyester labels with ribbon
M21-500-4610.5 in (12.7 mm) × 21 ft (6.4 m)21 ftSelf-laminating cryogenic polyester labels with ribbon
M21-750-4610.75 in (19.05 mm) × 21 ft (6.4 m)21 ftSelf-laminating cryogenic polyester labels with ribbon

2️⃣ B-7425 – Chemical-Resistant Cryogenic Polypropylene Labels

An economical, durable choice for high-volume sample labeling where chemical resistance and cryogenic performance are essential.

The B-7425 material resists a broad range of solvents, extreme cold, and heat, maintaining adhesion on smooth lab surfaces.

Key Features

  • Chemical & Temperature Resistant: Resists harsh solvents and extreme conditions (-112 °F to +158 °F / -80 °C to +70 °C).
  • Cryo-Safe & Autoclavable: Designed for long-term freezer and cryogenic storage.
  • Permanent Adhesive: Bonds securely to glass, stainless steel, copper, and polypropylene.
  • Halogen-Free: Environmentally compliant for clean lab use.
  • Ideal For: Conical tubes, centrifuge tubes, vial tops, and general laboratory ID.

Available Sizes – B-7425 Material

Part NumberLabel Width × LengthRoll LengthDescription
M21-375-74250.375 in (9.53 mm) × 21 ft (6.4 m)21 ftChemical-resistant cryogenic polypropylene labels with ribbon
M21-500-74250.5 in (12.7 mm) × 21 ft (6.4 m)21 ftChemical-resistant cryogenic polypropylene labels with ribbon
M21-750-74250.75 in (19.05 mm) × 21 ft (6.4 m)21 ftChemical-resistant cryogenic polypropylene labels with ribbon

Technical Properties

PropertyB-461 (Polyester)B-7425 (Polypropylene)
Temperature Range-320 °F to 266 °F (-196 °C to +130 °C)-112 °F to 158 °F (-80 °C to +70 °C)
Adhesive TypePermanent AcrylicPermanent Acrylic
Surface CompatibilityGlass, Polypropylene, Stainless SteelGlass, Polypropylene, Copper, Steel
Chemical ResistanceExcellentExcellent
AutoclavableYesYes
Halogen-Free / RoHSYes / YesYes / Yes
Print TechnologyThermal TransferThermal Transfer
Ribbon IncludedYesYes
ColorWhite print area with clear laminateWhite matte finish

Common Laboratory Applications

  • Cryogenic Storage: Vials, microtubes, and cryo boxes for ultra-low-temperature freezers and liquid nitrogen tanks.
  • Sample Tracking: Secure labeling for biological, chemical, and clinical specimens.
  • Chemical Resistance: Labeling in labs handling solvents, alcohols, and reagents.
  • Autoclave Processing: Withstands repeated sterilization cycles.
  • General Lab Identification: Slides, flasks, and reagent containers.

Advantages

  • Two high-performance materials for all laboratory conditions.
  • Compatible with Brady M21 handheld printers for instant label creation.
  • Ribbon included – ready for use out of the box.
  • Long-term durability in cryogenic, chemical, and autoclave conditions.
  • Brady Authentic Materials ensure printer calibration and consistent print quality.


The Brady Cryogenic Laboratory Label Series for M21 Printers combines precision, durability, and adaptability for modern lab environments.

Choose between B-461 Self-Laminating Polyester for maximum protection or B-7425 Chemical-Resistant Polypropylene for an economical, high-performance solution.

Both materials deliver permanent, solvent-resistant identification for vials, tubes, slides, and containers — ensuring reliable sample traceability across the coldest freezers and harshest chemical conditions.


  • Size:   Width: 12.70 mm Width: 19.07 mm Width: 9.53 mm
  • Label Material:   B-461 (Polyester) B-7425 (Polypropylene)

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