PCM Gel bricks
Phase Change Material (PCM) gel bricks represent the most technically advanced passive refrigerant solution in the cold chain packaging market, using the physics of latent heat of fusion to maintain products at a precisely defined temperature set-point for extended periods. Unlike conventional ice packs that gradually warm to ambient once their thermal mass is depleted, PCM bricks transition from solid to liquid at a specific, engineered temperature point — absorbing large quantities of thermal energy at a constant temperature during this phase change, providing unmatched temperature stability.
The significance of this thermodynamic property for cold chain applications cannot be overstated. A conventional ice pack produces an approximately linear warm-up curve from its initial frozen temperature toward ambient. A PCM brick, by contrast, maintains the package temperature at or very close to its phase change temperature — typically 0°C or 5°C — for as long as the phase change process continues, providing a stable, extended temperature window of exceptional value for precision pharmaceutical applications.
In pharmaceutical cold chain logistics, PCM bricks are increasingly specified for temperature-sensitive biological medicines, vaccines, and clinical trial samples. A vaccine shipper using 5°C PCM bricks maintains the internal temperature close to 5°C throughout the transit, providing the type of stable, documented temperature profile that GDP (Good Distribution Practice) compliance requires. Pair PCM bricks with our dataloggers to capture a complete, auditable time-temperature record for regulatory submissions and quality management systems.
Clinical trial sample logistics — where biological specimens must be transported to central laboratories under precisely controlled temperature conditions — represent a demanding PCM application where chain-of-custody documentation and temperature excursion prevention are paramount. PCM bricks, combined with validated insulated shipping containers or vacuum panel ice boxes and calibrated dataloggers, provide the documented cold chain performance that clinical trial regulatory requirements demand.
For premium seafood export — live lobster, premium sashimi-grade tuna, and specialty crustaceans — PCM bricks tuned to 0°C allow operators to maintain product at the ideal holding temperature for extended airfreight journeys without the risk of partial freezing that can occur with excess conventional ice. Dry Chill’s PCM gel brick range includes standard phase change temperature points of 0°C and 5°C, with custom PCM formulations available on request for specialty pharmaceutical and industrial applications. Explore the full refrigerant range.