Cold Chain and Temperature Package Integrity Testing
Thermal and Cold Chain packaging refers to products that must remain in a temperature-controlled environment. Oftentimes, packages will experience stress throughout the distribution process and transportation. A common stressor is environmental conditions. Changes in temperature or humidity can damage packaging (like cardboard) or a product.
Equipped with over 15 climatic chambers and oversized walk-in climatic chambers, Keystone Package Testing is capable of administering multiple tests at once and delivering fast results. We can conduct altitude and environmental testing which serve different purposes in the distribution process.
Why is Cold Chain Testing Important?
Cold chain testing plays a critical role in ensuring packages arrive ready for use or consumption. Keystone has extensive experience evaluating thermal and cold chain packaging under real-world distribution conditions.
For example, pharmaceutical and food products often require specialized thermal packaging to maintain product quality. Pharmaceutical package testing is especially important because many medical products must remain within a specific temperature range throughout storage and distribution. Therefore, pharmaceutical packaging must maintain the required temperature for the product’s intended shelf life. In addition, some medications have very short shelf lives, making package integrity essential from shipment through final delivery.
Scope of the Temperature Validation Testing Process
Temperature validation testing identifies potential risks before temperature-sensitive products enter the distribution chain. During testing, thermocouple sensors are placed both inside and outside the package to continuously monitor temperature conditions. The packaged product is then exposed to controlled environmental conditions, including high and low temperatures and rapid transitions known as thermal shock.
Temperature Mapping
To verify temperature consistency, engineers perform temperature mapping to measure temperature variations throughout a package or pallet.
The number of thermocouples required for pallet temperature mapping depends on pallet size, packaging configuration, and validation requirements.
As a result, engineers can identify areas where temperature fluctuations occur and confirm that products remain within acceptable temperature ranges during transportation. In addition, the collected data reveals how packaging and environmental conditions influence heat gain and heat loss throughout storage and distribution. By understanding these variables, manufacturers can select the appropriate packaging materials, insulation systems, and refrigerants to maintain consistent temperature control across the supply chain.
Regulatory Considerations
Any irregularities identified during temperature validation must be documented and evaluated. In regulated industries such as pharmaceuticals and food, organizations like the FDA require temperature excursions and packaging failures to be investigated. Poor temperature control can compromise product quality, reduce shelf life, and create compliance risks. Effective packaging validation helps ensure products maintain safety and integrity throughout distribution.
Cold Chain Test Types
Cold chain packaging is evaluated through environmental and distribution simulation tests designed to replicate real transportation conditions.
Climatic and Environmental Testing
Climatic testing evaluates how temperature and humidity affect packaging systems and their contents. Environmental chambers simulate the conditions packages may experience during shipping, storage, or last-mile delivery.
Packages may be exposed to prolonged temperature variations, humidity cycles, or thermal shock conditions where products rapidly transition between hot and cold environments. Environmental conditioning is also often performed before mechanical package tests to ensure samples are evaluated under realistic conditions.
Altitude Testing
Altitude testing evaluates the effects of reduced air pressure on packaging systems. During air transport or ground transportation through mountainous regions, packages may experience lower atmospheric pressure.
These conditions can cause packaging failures such as seal leaks, deformation, or package rupture. Altitude testing simulates these environments to verify that packaging maintains integrity and continues to protect the product throughout transportation.
Cold Chain Package Test Standards
Below is a list of some of the most common testing standards used for thermal and cold chain packaging. If you are looking for another specific test that you do not see listed here, please contact us!
- ASTM Standards
- ISTA Standard
- IEC Standards
Expert Cold Chain Validation Testing Laboratory
Keystone Package Testing is an ISTA-certified lab and is proud to provide customers with reliable testing and reports. With international accreditation, competitive pricing, and quick turnaround time, Keystone is the right package testing partner.
Our testing engineers are experienced and have a thorough knowledge of industry standards. They are prepared to guide you through the package testing process. Let’s get started! Request a quote or contact us at (724) 657-9940.
Interested in the EMC/EMI, climatic, dynamic, shielding effectiveness, or IP Code testing of a product? Follow the corresponding links or www.keystonecompliance.com for more information.