If your company is pursuing Amazon packaging certification, there’s a critical date on the horizon: August 1, 2026. After that date, the 2018 version of the ISTA 6-Amazon.com Over Boxing procedure will no longer be accepted for new Prep Free Packaging (PFP) enrollment submissions. All new applications must comply with the updated 2026 protocol.
And if your packaging was already certified under the 2018 procedure, don’t assume you’re covered: ISTA’s policy allows test reports based on a previous version to be accepted for up to one year after the revision is published. If your certification predates March 2026, that window is already running.
This is not a minor revision. The update introduces new dunnage requirements, structured over-box selection criteria, formalized multi-product simulation methodology, and a stronger emphasis on test repeatability across laboratories. Here’s what you need to know.
But what do these updates actually mean for companies seeking Amazon packaging certification?
In this article, we’ll examine the most important changes in the new procedure, their impact on e-commerce testing practices, and how companies can prepare for the evolving requirements of Amazon’s fulfillment network.
What is ISTA 6-Amazon.com Over Boxing?
It’s the certification protocol designed for products weighing 70 lb (32 kg) or less that are not shipped in their own packaging. The retail package is placed inside a corrugated shipping container, the over box, along with protective dunnage, and the complete shipment is subjected to the real-world conditions of Amazon’s fulfillment and parcel delivery network.
Unlike SIOC (Ships In Own Container) programs, Over Boxing evaluates the entire shipment system: product, primary package, dunnage, and shipping carton. And that’s exactly what has evolved with this update.
The 4 Key Areas Updated in 2026
Starting August 1, 2026, all new Amazon Prep Free Packaging (PFP) submissions must be tested according to the revised ISTA 6-Amazon.com Over Boxing procedure. Understanding these changes now can help avoid delays, retesting, and certification issues later.
The core testing sequence remains unchanged
The protocol keeps its foundational test blocks for reproducing real fulfillment hazards:
- Free-Fall Drop Testing: simulates impacts during handling, sorting, loading, unloading, and last-mile delivery.
- Random Vibration Testing: replicates the transportation environment across ground, air, and parcel distribution.
- Bridge & Concentrated Impact Testing: evaluates carton integrity for elongated and flat packages.
- Leak Integrity Testing: mandatory for products containing liquids.
Explore our set of testing equipment for ISTA 6-Amazon.com, ISTA 3L, and other e-commerce packaging validation protocols here!
Where does certification need to be conducted?
Certification for Amazon’s Prep Free Packaging (PFP) program must be carried out at a laboratory approved by the APASS network (Amazon Packaging Support and Supplier Network).
Not every packaging laboratory is authorized to perform certification testing for Amazon’s PFP program. Verifying that your chosen laboratory is part of the APASS network should be one of the first steps in your certification process.
What this means for your business
Whether you’re preparing for the new ISTA 6-Amazon.com Over Boxing requirements, validating packaging for Amazon SIOC programs, or implementing ISTA 3L testing capabilities, having the right laboratory equipment and testing strategy is essential.
At Safe Load Testing Technologies, we help packaging manufacturers, brand owners, and testing laboratories design, expand, and optimize their e-commerce testing capabilities. From drop testing and vibration testing to compression, impact, and clamp testing, our solutions support a wide range of ISTA protocols used throughout today’s e-commerce supply chain.
Planning to upgrade your laboratory or build a new e-commerce packaging testing facility?
Contact our team to discuss the equipment and testing capabilities needed to meet your certification and packaging validation objectives.
