
Designed for cargo that cannot afford temperature excursions or contamination.
5°C is the validated lead configuration · Customizable temperature points available
www.passive-edge.cn
Risk Identification
Click each scenario to see the risk consequence and how UltraST reduces it
If your shipment is delayed by 8–10 hours, will it still stay compliant?
Click to see risk details →
After frequent lid openings, how fast can the temperature recover?
Click to see risk details →
Is your current PCM slowing down your entire operation?
Click to see risk details →
What happens if leakage contaminates the shipment?
Click to see risk details →
The Numbers That Matter
Based on real comparative testing under identical conditions
What You Actually Gain
Evidence Base
All data below is derived from real comparative testing — not theoretical models or marketing estimates. Test conditions simulate real transport scenarios with dual-stage monitoring and 51,000+ recorded data points.
Core Decision Data
An extra 11.4 hours is not just time — it is protection against real-world uncertainty
Compliance Window Comparison
After 8h delay, cargo exceeds compliant temperature range
After 8h delay, cargo remains within 2–8°C compliant range
Operational Efficiency
Faster recovery reduces waiting time, lowers PCM inventory requirements, and improves operational throughput
Recharge Time
UltraST 2.3× faster
Daily Cycles
2.6× turnover improvement
PCM Sets Needed
Lower inventory requirement
ROI Calculator
Enter your operational parameters for an instant annual savings estimate
batches/day
sets
USD/set/day
Calculation Result (based on 8-hour working day)
Formula: Ice sets = ⌈batches ÷ (480÷129.5)⌉; UltraST sets = ⌈batches ÷ (480÷57)⌉; Annual savings = sets saved × daily cost × 365. Assumptions: 8h working day, equal PCM weight, holding cost includes procurement/storage/cleaning.
High-Frequency Handling Risk
In high-frequency handling scenarios, this difference compounds over time. Recovery speed after each opening directly determines cumulative excursion risk.
Recovery After Lid Opening
T3 Temp After Opening

Contamination Risk
A single leakage event can compromise the entire shipment
Decision Tool
Answer 6 questions to get an instant suitability assessment
Daily shipment batches
Single shipment duration
Frequency of lid openings
Cargo value level
Contamination sensitivity
Current ice pack sets in use

Designed For
Temperature Platform
UltraST is not a single-temperature product, but a customizable thermal solution for different transport requirements. This page showcases the 5°C validated configuration — but our capability extends beyond this.
Real testing. Real product. Real capability.

Every batch is irreplaceable. UltraST's 39.6h compliance window absorbs real-world delays at every airport handoff.

Zero liquid phase means zero contamination risk. Solid-state design protects biologics from leakage-induced loss.

Trial data integrity starts with temperature integrity. 10.2-min recovery after every lid opening keeps specimens compliant.

When failure is not an option. Precision 5°C control with maximum safety margin for irreplaceable cargo.
Real-World Scenario
Customs hold adds 6 hours. Cargo sits in transit.
Box opened 3 times during sorting. Warm air enters each time.
48 hours later. Cargo arrives. Box opened for inspection.
Your cargo still remains within safe temperature range.
That is why operators choose UltraST.
Fit Assessment
If your cargo cannot afford any failure, you are the right customer.
Next Step
Best for customers who cannot afford failure in cold-chain transport
See real performance in your own operation
Receive UltraST samples and validate performance in your actual transport conditions
Understand the data behind the results
PDF with full comparative data, test methodology, and key conclusions
Get a customized solution
Speak directly with our engineering team to assess fit and design a custom solution
Or email us directly:[email protected]