UN3373 Category B Labels: Understanding Requirements for Biological Substance Shipments
When shipping biological samples, diagnostic specimens, laboratory samples, or medical testing materials, correct packaging and labelling is essential. One of the most commonly used markings in the healthcare, laboratory, veterinary, and medical logistics sectors is the UN3373 Biological Substance Category B label.
At DG Solutions, we supply high-quality UN3373 Category B Labels (50mm x 50mm, Roll of 500) designed to help businesses meet dangerous goods transport requirements for road, sea, and air freight shipments.
What is UN3373?
UN3373 is the transport classification assigned to Biological Substance, Category B. These are infectious substances that do not meet the criteria for Category A but still require specific packaging and marking requirements during transport. Examples can include:
-Diagnostic specimens
-Blood samples
-Tissue samples
-Veterinary specimens
-Laboratory testing samples
-Clinical research materials
UN3373 shipments are commonly transported by medical laboratories, healthcare providers, veterinary clinics, universities, research facilities, and courier companies handling biological materials.
Why is the UN3373 Label Required?
The UN3373 diamond mark alerts transport operators, freight handlers, and receiving facilities that the package contains a Biological Substance, Category B.
Under transport regulations, packages containing UN3373 substances must display the correct marking alongside the proper shipping description. The label helps ensure shipments are handled appropriately throughout the transport chain and supports regulatory compliance.
UN3373 Packaging Requirements
Most UN3373 shipments must comply with Packing Instruction 650 (PI650), which requires a triple packaging system consisting of:
1. Primary receptacle
2. Secondary leak-proof packaging
3. Strong rigid outer packaging
The outer package must be correctly marked with the UN3373 diamond marking and associated transport information.
Common Industries Using UN3373 Labels
UN3373 labels are regularly used by:
-Medical laboratories
-Pathology services
-Veterinary clinics
-Research organisations
-Universities
-Pharmaceutical companies
-Healthcare providers
-Medical courier services
-Diagnostic testing facilities
As biological sample transport continues to increase across New Zealand and Australia, having compliant labelling readily available is essential for day-to-day operations.
UN3373 Label Specifications
DG Solutions supplies:
UN3373 Category B Labels
-Size: 50mm x 50mm
-Quantity: 500 labels per roll
-High-quality self-adhesive material
-Clear and durable print quality
-Suitable for transport packaging and specimen shipments
-Ideal for laboratories, medical facilities, and courier operations
The compact 50mm x 50mm format provides a professional and compliant marking solution while remaining practical for smaller biological substance packages.
Why Purchase UN3373 Labels from DG Solutions?
DG Solutions is a New Zealand-owned dangerous goods specialist providing dangerous goods compliance services, packaging, training, and transport solutions.
e understand the practical requirements of shipping regulated materials and provide products designed for real-world transport environments.
Benefits include:
-Fast NZ-wide shipping
-Bulk rolls of 500 labels
-Dangerous goods compliance expertise
-Support for healthcare and laboratory customers
-New Zealand-based customer service
-Dangerous goods packaging and transport knowledge
Order UN3373 Category B Labels Online
If your organisation ships biological samples, laboratory specimens, or diagnostic materials, having compliant UN3373 labels available is an important part of maintaining transport compliance.
For bulk orders, dangerous goods packaging enquiries, or compliance support, contact DG Solutions today.