Problems with shipping dry ice to the US and how Iceworx solves this globally
Shipping frozen samples with dry ice to the United States seems straightforward on paper, but in practice, it surprisingly often goes wrong. Companies in food, biotech, and medical R&D face delays, rejected shipments, and temperature issues. Especially with valuable samples, one small error can lead to complete product loss.
In this blog, you'll read about the most common problems with dry ice shipments to the US and how Iceworx helps you ship frozen samples safely, compliantly, and worry-free worldwide 💫
Why dry ice shipments to the US so often go wrong
1. Strict UN1845 regulations
Dry ice is classified as UN1845 hazardous material. In the United States, this is extremely strictly controlled. Many shipments are held up because:
✔ The exact dry ice weight is missing or incorrect
✔ Mandatory labels are not placed correctly
✔ Documentation does not comply with IATA and air freight rules
Even a small administrative error can cause customs delays or a return shipment.
2. Customs, FDA, and Prior Notice obligations
For food and certain medical samples, an additional check by US Customs and the FDA applies. One of the biggest stumbling blocks here is the FDA Prior Notice System Interface (PNSI).
For almost all food samples:
✔ Mandatory registration via the FDA Prior Notice System Interface
✔ Registration before arrival in the US
✔ Correct product description and HS code
✔ Indication of non-commercial value or R&D use
Many shipments get stuck due to:
✔ Missing Prior Notice registration
✔ Incorrect product information
✔ No Prior Notice Confirmation Number on the documents
Without a valid FDA Prior Notice, a shipment is almost always detained or rejected, while the dry ice continues to sublimate.
3. Incorrect dry ice calculation
One of the biggest causes of failed shipments is an incorrect estimate of the amount of dry ice.
✔ Too little dry ice leads to temperature loss
✔ Too much dry ice can lead to rejection by airlines
Especially during weekends, holidays, and longer transit times to the US, a correct calculation is crucial.
4. No real-time follow-up
Many shippers only discover too late that a shipment is delayed. Without active monitoring, you run the risk that:
✔ The dry ice has completely evaporated
✔ The recipient is unavailable
✔ The shipment is destroyed by customs
How Iceworx completely solves these problems
Iceworx was developed to precisely eliminate these international bottlenecks. Not with separate tools, but with one smart and integrated platform.
Fully automatically calculated
You enter product data, weight, dimensions, and destination. The Iceworx platform automatically calculates:
✔ The correct box and insulation
✔ The exact dry ice weight
✔ The correct documentation for shipments to the US
No more guesswork. Everything is correct immediately.
Support for FDA Prior Notice
Iceworx actively assists with FDA-related requirements:
✔ Insight into whether FDA Prior Notice is mandatory
✔ Correct product description for PNSI
✔ Correct notation on commercial invoice
✔ Pre-departure check
This prevents shipments from getting stuck upon arrival in the US.
Globally compliant shipping
Iceworx handles shipping according to all international guidelines:
✔ UN1845 and UN3373 correctly processed
✔ IATA and air freight requirements included
✔ Customs and FDA documentation automatically generated
This ensures that shipments are not unnecessarily held up.
Active monitoring and immediate intervention
Every shipment is monitored daily. In case of delay or risk:
✔ Immediate action is taken
✔ The carrier is managed
✔ The customer is proactively informed
This prevents valuable samples from being lost.
No stock and no waste
You don't need to keep boxes or dry ice in stock. Everything is arranged per shipment and precisely tailored to your shipment. This prevents errors and saves costs.
Shipping frozen samples worldwide without stress
Whether you're sending food samples, medical samples, or R&D products to the US, Canada, or Asia. With Iceworx, international shipping becomes manageable, predictable, and safe.
✔ Fast delivery
✔ Fully managed process
✔ Cost savings through accurate calculations
✔ Global expertise in dry ice shipments
Do you want to know how your shipments to the US can go smoothly?
Schedule a demo or start shipping directly via iceworx.com or schedule an online demo and discover the possibilities, you can start shipping right after.