Deep Frozen PCM Packs (-16°C to -21°C)

-16°C to -21°C PCM Packs for Specialized Cold Chain

High-Performance Deep Frozen PCM Packs for Deep-Frozen Stability

Transporting high-value biologics, critical vaccines, and premium frozen proteins requires a specialized thermal environment that sits significantly below the standard freezing point. In this rigorous sector of cold chain logistics, a standard 0°C ice pack or basic gel pouch is entirely inadequate, as they cannot maintain the deep sub-zero conditions needed to prevent product degradation. Furthermore, relying entirely on dry ice introduces volatile gas hazards, rapid sublimation rates, and strict airline shipping regulations that complicate global transit.

Weight: 200g

Size(mm): 140 x 120 x 15

PCM: -16°C~-21°C

At PCMCOOL, we engineer heavy-duty Deep Frozen PCM Packs (-16°C to -21°C) to solve these high-stakes shipping challenges. Utilizing our proprietary, high-latent-heat phase change materials (PCMs), these specialized freezing thermal agents act as a precise, predictable temperature buffer.

By locking in a steady temperature plateau within the -16°C to -21°C range, our Deep Frozen PCM Packs shield your sensitive cargo from external thermal shock, ensuring compliance and product integrity across extended global distribution networks.

Why Choose Our Phase Change Deep Frozen PCM Packs?

When handling deep-frozen pharmaceutical or commercial cargo, absolute thermal stability is non-negotiable. Our specialized eutectic pcm packs are specifically formulated to replace unpredictable cooling agents, providing an engineered solution that protects both your cargo and your operational bottom line.

Advanced Eutectic Technology of Deep Frozen PCM Packs

Our Deep Frozen PCM Packs are formulated with advanced organic and inorganic eutectic compounds, precision-calibrated to transition exactly between -16°C and -21°C. When ambient heat attempts to penetrate your vacuum insulation panels (VIP) or EPS shippers, the thermal pack actively absorbs the energy, maintaining a steady frozen plateau.

Because these are structured as specialized commercial-grade packs, they maximize surface contact and heat absorption efficiency inside the shipping container, wrapping your payload in a continuous shield of deep-sub-zero protection.

Key Performance Benefits

Dry Ice Alternative Capabilities

Eliminates hazardous gas regulations and structural box venting, providing a safe passive cooling source for international air freight.

Exceptional Latent Heat Density

Absorbs massive amounts of thermal energy during phase transition, enabling longer protection windows with less physical cooling mass.

Validated -16°C to -21°C Shielding

Holds a continuous, unyielding thermal baseline for 48 to 96 hours when integrated into validated thermal packaging configurations.

Industrial-Grade Longevity

Encased in heavy-duty, multi-layered puncture-resistant outer shells designed to withstand extreme cold and thousands of commercial freeze-thaw cycles without leaking.

Applications: Target Sectors for -16°C to -21°C Thermal Packs

Vaccine & Biologics Distribution

Certain modern live-virus vaccines, clinical trial materials, and critical pharmaceutical ingredients must be stored and transported strictly below -15°C to preserve their molecular potency.

Our Deep Frozen PCM Packs are the trusted choice for global healthcare logistics providers who require strict GDP-compliant packaging solutions that guarantee zero freeze-thaw degradation during international distribution.

High-Value Deep-Frozen Seafood & Meats

Premium proteins, such as sashimi-grade bluefin tuna, high-end sea urchin (uni), and specialized frozen delicacies, require deep-freeze environments to preserve texture, fatty acid profiles, and color.

Deploying our Deep Frozen PCM Packs ensures these luxury foods remain locked in a premium frozen state, avoiding the micro-thawing that ruins gourmet culinary properties.

Temperature Selection Guide

Choosing the Right Deep Frozen PCM Pack for Your Cold Chain

When shipping frozen goods, a one-size-fits-all temperature does not work. Using the correct deep frozen pcm pack protects your products from melting, texture damage, and spoilage. Here is how to choose the right deep frozen pcm pack based on your cargo:

For Short-Haul & Micro-Frozen Foods

-16°C PCM Pack

Ideal for last-mile delivery of frozen dumplings, meal kits, and meat where transport temps only need to stay between -10°C and -14°C. It stops food from softening without wasting energy. It also protects premium chocolates and pastries from melting during summer.

For Standard Frozen Foods

-18°C PCM Pack

The global standard for shipping pork, beef, poultry, and frozen dough. A standard -18°C deep frozen pcm pack completely stops bacteria growth and ensures full regulatory compliance for frozen food logistics.

For High-Fat Seafood & Ice Cream

-20°C or Lower PCM Pack

Seafood (Salmon, Tuna, Shrimp): High-fat fish oxidizes and turns yellow at -18°C. A -21°C or -23°C deep frozen pcm pack maintains a safe -20°C environment to lock in freshness.

Ice Cream: Sensitive to even a 2-degree change, which causes ice crystals and ruins the texture. A specialized deep frozen pcm pack provides the strong thermal buffer needed to keep ice cream perfectly frozen.

Frequently Asked Questions

How do I correctly pre-condition and charge Deep Frozen PCM Packs?

To fully charge the phase change material, your industrial blast freezer must be set approximately -5°C to -10°C below the target transition point. For our -21°C packs, we recommend a freezing environment of -26°C~-23°C for at least 24 to 48 hours to ensure the core is completely solid.

Why are these phase change Deep Frozen pcm packs preferred over standard water ice packs?

Standard water ice packs melt directly at 0°C, which fails to provide the deep-freeze environment required for vaccines and frozen foods. Our Ultra-Low Temperature PCM Packs maintain a stable thermal defense plateau far below freezing, completely eliminating partial thawing and surface moisture buildup on your high-value cargo.

Can PCMCOOL customize these ultra-low temperature pcm packs for B2B wholesale orders?

Yes. As an established OEM/ODM manufacturer, we offer comprehensive customization for bulk wholesale clients. We can adapt the outer dimensions to fit your specific insulated shipper models, adjust the precise eutectic melting point anywhere from -16°C down to -21°C, and print your corporate branding directly onto the durable casing.