Temp difference ΔT
— °C
Reusable, foil-sealed UltraST PCM modules for pharmaceutical cold chain shipping, tuned to validated temperature windows — 2–8 °C, sub-zero, and controlled-room ranges. High thermal conductivity, zero leak risk, and PFAS-free chemistry for regulated pharmaceutical lanes.
1. Narrow stability windows. Biologics, vaccines, and many sterile products tolerate only a few degrees of excursion before formal stability impact — and before regulatory consequences.
2. Long, uncertain transit. Last-mile delays, customs holds, missed flights, and tarmac dwell time all stretch the actual transit envelope well past the planned one.
3. Consumable overhead. Conventional gel packs and dry ice are heavy, single-use, and require constant pre-conditioning. Repack cycles add labor cost and contamination risk.
A PCM module tuned to the validated window addresses all three. Latent-heat storage holds the temperature flat right at the phase point, extending in-spec hold time through transit delays — with reusable, qualified hardware instead of stacks of single-use coolant.
All-solid UltraST microcapsules — high-conductivity, leak-free, and stable across thousands of freeze–thaw cycles.
Two integration paths — depending on whether you want to specify your own thermal subsystem around our materials, or take a pre-engineered module from us.
Specify Passive Edge encapsulated PCM into your existing reusable container or pack design. Phase point qualified to your validated cold chain window with full chemistry documentation.
Pre-engineered shipper inserts and reusable container modules, sized for common pallet and parcel footprints. Validated for representative routes and seasonal envelopes.
— Product · UltraST module
Every Passive Edge cold-chain module is built around UltraST PCM — a high thermal-conductivity, all-solid phase-change material engineered to replace gel packs, salt hydrates, and PFAS-bearing eutectics in regulated cold chain.
Roughly 10–40× the thermal conductivity of conventional cold-chain coolants. The module charges faster and responds to ambient excursions without lag.
No free liquid inside the foil seal. Drops, punctures, or shipper damage cannot contaminate the payload or compromise the qualified window.
No fluorinated heat-transfer chemistry, no formaldehyde-based stabilizers. Documented for regulated cold chain and ESG audit scope.
Charge / discharge stability well past 10,000 cycles. Supports reusable shipper fleets and a payback path that single-use consumables cannot reach.
| — Attribute | UltraST PCM module | Conventional PCM / gel pack |
|---|---|---|
| Thermal conductivity | 5 – 20 W/m·K ~ 10–40× | 0.2 – 0.8 W/m·K |
| Phase-point range | –80 °C to +300 °C | Narrow, fixed per chemistry |
| Cycle life | > 10,000 cycles 2× | < 5,000 cycles |
| Leak risk | None — all-solid form | Present — liquid / gel phase |
| PFAS & fluorine | PFAS-free · fluorine-free | Often present in eutectics |
| Formaldehyde | Formaldehyde-free | Possible — stabilizer chemistry |
| Flame retardancy | High — inherent | Low |
| Total cost of ownership | ~ 20–30 % lower ↓ TCO | Baseline |
Comparison values are representative — actual numbers are tuned per chemistry and validated in the chemistry data package.
The more of the following you can share early, the faster we can return a useful response. None of these constitute a commitment from either side.
Size the foil-sealed UltraST PCM charge for your shipper or cold-chain vehicle in four guided steps — pick a scenario, describe the container, set your temperature window, choose a phase point. The required PCM mass updates live, with a safety margin. Outputs are directional pending lane validation.
Turn this dosage into a real SolarCool / UltraST configuration — our engineering team can validate it on your lane.
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We work in clearly-bounded stages. No stage commits the next. Each stage produces a document you can use internally — even if you don't proceed with us.
You share window, route, ambient envelope, packaging baseline, and target outcome. We return a written fit assessment within ~5 business days.
Joint review of PCM chemistry, encapsulation, and module geometry for your window and shipper format. Includes chemistry data package and qualification scope.
Scoped pilot on a single representative lane, with temperature instrumentation, worst-case ambient profile, and a defined qualification window.
Lane qualification data, GxP documentation, and recommendation for additional lanes. Rollout decisions based on validated thermal evidence.
Phase point selection by validated window, latent heat capacity, encapsulation chemistry, freeze / thaw cycle data, leachable / extractable summary.
Integration patterns for parcel, pallet, and ULD shippers. Hold-time sizing worksheets, worst-case ambient profiles, and pilot scaffolds.
Editable template for thermal mapping, worst-case ambient profile, qualification scope, and GxP-ready reporting outputs.
Our team will respond with a fit assessment, a relevant technical data package, and a proposed pilot test plan if there is a match.