Video: Hazmat Packing Groups Explained

Posted on 8/11/2025 by Lion Technology Inc.

Some hazardous materials are more hazardous than others. Most of the nine hazard classes and divisions use Packing Groups (PG) to distinguish severity of hazard.

This video addresses the classes and divisions that use PG "groupings" - PG I, PG II, and PG III - to identify levels of danger within the same class or division.

Hazmat Ground Shipper Training

Learn all the DOT’s rules for classifying, packaging, marking, labeling, and documenting your hazmat shipments in full compliance with the Hazardous Materials Regulations at Lion’s Hazmat Ground Shipper Certification (DOT) Workshop.

Or browse all Lion’s hazmat shipper training at Lion.com/Hazmat.

Find a Post

Search for:

Compliance Topics

Compliance Archives

The instructor was very engaging and helped less experienced people understand the concepts.

Steve Gall

Safety Leader

Given the choice, I would do all coursework this way. In-person courses go very fast without the opportunity to pause or repeat anything.

Ellen Pelton

Chemical Laboratory Manager

The instructor was very knowledgeable and provided pertinent information above and beyond the questions that were asked.

Johnny Barton

Logistics Coordinator

The instructor made the class very enjoyable and catered to the needs of our group.

Sarah Baker

Planner

Lion is at the top of the industry in compliance training. Course content and structure are updated frequently to make annual re-training enjoyable. I like that Lion has experts that I can contact for 1 year after the training.

Caroline Froning

Plant Chemist

Convenient; I can train when I want, where I want.

Barry Cook

Hazmat Shipping Professional

Lion was very extensive. There was a lot of things that were covered that were actually pertaining to what I do and work with. Great Job. I will be coming back in three years!

Tony Petrik

Hazmat Shipping Professional

Best instructor ever! I was going to take my DOT training w/a different provider, but based on this presentation, I will also be doing my DOT training w/Lion!

Donna Moot

Hazardous Waste Professional

Very good. I have always appreciated the way Lion Tech develops, presents and provides training and materials.

John Troy

Environmental Specialist

I tried other environmental training providers, but they were all sub-standard compared to Lion. I will not stray from Lion again!

Sara Sills

Environmental Specialist

Download Our Latest Whitepaper

This guide will help you identify 25 of the most -cited errors in RCRA training, recordkeeping, hazardous waste ID, container management, universal waste, and laboratories.

Download

By submitting your phone number, you agree to receive recurring marketing and training text messages. Consent to receive text messages is not required for any purchases. Text STOP at any time to cancel. Message and data rates may apply. View our Terms & Conditions and Privacy Policy.