A Comprehensive Guide By Questar

Packaging hazardous materials can be complex due to strict safety regulations imposed by various nations. The United Nations (UN) developed a universal rating system to standardize and simplify the packaging and transportation of dangerous goods across international borders. These ratings ensure that containers meet specific safety standards, providing reliable and secure packaging solutions for hazardous materials.

The Importance of UN Ratings

A UN Rating is a series of letters and numbers that indicate what a container is approved to handle. This designation results from stringent testing procedures that containers must undergo to receive UN certification. The U.S. Department of Transportation (DOT) relies on current UN regulations to ensure compliance and safety during the shipment and storage of hazardous materials.

Key Features of UN Rated Packaging

  •  Permanent Markings: UN Ratings are usually marked on the bottom and either the side or top of the container, often referred to as the "birth certificate" of the container's original performance capability.
  • Safety Standards: Developed to preserve the environment and protect those handling the materials, UN Ratings provide a
    standardized approach to packaging hazardous goods.

History of UN Rated Packaging

The concept of UN Ratings emerged in the early 1990s when the DOT adopted Performance Oriented Packaging (POP). Before this adoption, conflicting regulations between countries complicated the shipping process for hazardous materials. The United Nations introduced UN Ratings to streamline these regulations, ensuring international compatibility and enhancing safety during transportation.

Questar's Commitment to Safety

For over three decades, Questar has been at the forefront of providing UN certified packaging solutions. Our long-standing expertise and commitment to quality have made us a trusted partner in the industry. We have continually evolved with the latest regulations and innovations, ensuring our customers receive the highest standards of safety and reliability. Our inventory of UN rated packaging is vast and available online. Here are a few examples:


When to Use UN Rated Containers

To comply with international safety standards, UN ratings are mandatory for shipping a wide range of hazardous materials. These
include, but are not limited to:

Hazardous Materials

  • Explosives
  • Non-flammable gas
  • Flammable gas
  • Flammable liquid (*)
  • Infectious substance
  • Corrosives (*)
  • Flammable solid (*)
  • Oxidizers
  • Organic peroxide
  • Toxic materials
  • Radioactive material

(*) - Most common hazard classes for UN certified classes. For more information on categorizing your hazardous material, use the HAZMAT Table.

Flammable Gas Icon

Responsible Packaging

Shippers are responsible for adhering to regulations and selecting the appropriate packaging for their material. They must ensure that the container is marked and labeled correctly and is closed pursuant to the manufacturers closure instructions. Non compliance can result in significant fines, making it imperative to follow the guidelines precisely.


UN Packaging Groups

  • X - Package approved for packing groups I, II, and III material only 
  • Y - Package approved for packing groups II and III material only
  • Z - Package approved for packing group III material only

UN Rated Testing and Codes

Containers must pass a series of rigorous tests to receive UN certification. Here are six UN code identifiers commonly used:

UN Rated Testing Code for Liquids

UN Rated Testing Code for Solids

1. Packaging Identification Code

This code specifies the type of packaging (e.g. drum, jerrican) and its material composition. It helps identify the container's design and intended use.

2. Packaging Group

This indicates the level of danger associated with the contents. There are three levels: I (X) for high danger, II (Y) for medium danger, and III (Z) for low danger. 
For Liquids
For Solids

3. Hydrostatic Test Pressure

Reflects the pressure the container can withstand without leaking, ensuring the integrity of the packaging under stress.
For Liquids
For Solids

4. Year of Manufacture

Denotes the year the container was produced, which helps track the age and compliance with contemporary safety standards.

5. Country of Origin

Identifies the country where the container was manufactured, aiding in regulatory compliance and traceability.

6. Manufacturer Symbol

A unique identifier assigned to the manufacturer, ensuring accountability and quality control.

Why Choose Questar for UN Rated Packaging?

Questar is a leader in providing reliable and compliant UN-rated packaging solutions. Our expertise extends to a variety of packaging types, including:

We pride ourselves on our commitment to sustainability and environmental responsibility. By choosing Questar, you ensure your hazardous materials are handled safely and efficiently, meeting all regulatory requirements. We focus on customer satisfaction by delivering high-quality, reliable packaging solutions tailored to your needs. Our team of experts is always available to guide you through selecting the appropriate UN rated containers for your products.

Get Started with Questar

Understanding the intricacies of UN rated packaging is crucial for the safe transport and storage of hazardous materials. Trust
Questar to provide top-tier packaging solutions that meet your safety and compliance needs. If you're ready to experience the Questar difference, contact us today to discuss your packaging requirements and let us help you find the best solution.

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