Thermal resilience · Cold chain Layer 02 · System

PCM Temperature Control for Pharma Cold Chains

Critical lanes need thermal resilience when schedules and handling depart from plan. Reusable, foil-sealed UltraST PCM modules for vaccines, biologics, and clinical specimens. Tuned to validated windows, they combine delay buffer, lid-opening recovery, and high-frequency turnaround. Shape-stabilized, sealed construction removes the free-liquid leakage contamination path in regulated pharma lanes.

Calculate PCM dosage → Discuss this application View UltraST test evidence ↗

Material Layer

UltraST PCM · Ultra-high-conductivity shape-stabilized material

System Layer

Foil-sealed shipper modules · Reusable inserts

Safety Path

Shape-stabilized · No free-liquid leakage path · Documentable safety package

Validation Path

Window validation · Pilot lane · GxP documentation

01Problem context

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02Material / System option

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03Duty conditions

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04PCM sizing

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05Validation & review

01 / Problem context

The real compliance drain is delay and lid opening.

1. Delays do not follow the plan. Airport handoffs, customs holds, last-mile dwell, and missed flights consume the temperature budget. In the UltraST product-site test, conventional ice packs reached the 2–8 °C boundary at about 28.2h; UltraST PCM extended the window to 39.6h, adding 11.4h of buffer.

2. Lid-opening events accumulate. Sorting, inspection, handoff scans, and sample access bring heat into the shipper. UltraST recovered to the compliance window in 10.2min after lid opening, 2.6× faster than the 26.4min ice-pack baseline.

3. Turnaround and leakage drive true cost. Conventional gel coolants need longer reconditioning and can create a liquid contamination path if damaged. UltraST is shape-stabilized and sealed with no free-liquid leakage path, recharges in 57min, and supports about 4 cycles per day.

So this page is not just about “adding more coolant.” It answers the operational question: can delays, lid openings, and damage risk be absorbed inside a validated temperature window while keeping the hardware reusable, documented, and lane-verifiable?

UltraST test evidence

2–8 °C compliance window with equal 3.21kg PCM, a 45L shipper, and 12 °C ambient

Ice-pack baseline 28.2h UltraST PCM tested 39.6h

Test conditions are from the UltraST product site: 45L insulated shipper, 12 °C ambient, equal 3.21kg PCM mass, T1/T2/T3 three-point monitoring, and 51,000+ recorded data points. Specific lanes still require validation by shipper, payload, and ambient profile.

UltraST PCM ultra-high-conductivity shape-stabilized material structure diagram — Structure diagram

Ultra-high-conductivity shape-stabilized PCM — a continuous conductive skeleton locks the phase-change core for fast transfer, form stability, and leak-free operation.

02 / Material & System options

From material to module.

UltraST ultra-high-conductivity shape-stabilized PCM powder

— Material option

PCM chemistry, qualified to your window

Specify Passive Edge encapsulated PCM into your existing reusable container or pack design. Phase-change temperature qualified to your validated cold chain window with full chemistry documentation.

PHASE POINT2–8 °C, 15–25 °C, sub-zero options
FORM FACTOREncapsulated plates · Sachets · Custom inserts
DELIVERSMaterial + chemistry data package + qualification support
FIT FORPharma operators with internal packaging engineering

PCM cooling modules in a 2–8 °C vaccine cold-chain transport scene

— Integration option

Reusable shipper module

Pre-engineered shipper inserts and reusable container modules, sized for common pallet and parcel footprints. Validated for representative routes and seasonal envelopes.

FORM FACTORParcel inserts · Pallet shippers · ULD-compatible
HOLD WINDOW48 / 72 / 120 h targets, per validation
DELIVERSModule + qualification data + lane pilot plan
FIT FORSponsors / 3PLs wanting reusable, qualified hardware

02 · The material inside

UltraST PCM — compliance window, recovery speed, and zero leakage in one material.

UltraST PCM cold-chain module in foil-sealed aluminum packaging

— Product · UltraST module

UltraST · Foil-sealed cold-chain module PE / 02

Every Passive Edge cold-chain module is built around UltraST PCM — an ultra-high-conductivity shape-stabilized phase-change material. A continuous conductive skeleton locks the phase-change core inside the foil seal, creating a shape-stabilized thermal buffer with no free-liquid leakage path for regulated lanes.

— 01 Compliance buffer

39.6h at 2–8 °C

In the equal-mass PCM test, UltraST adds 11.4h over the 28.2h ice-pack baseline for airport handoffs, customs holds, and last-mile delays.
— 02 Lid-open recovery

10.2min back in window

Recovery after lid opening is about 2.6× faster than the ice-pack baseline, helping repeated sorting, inspection, and handoff events stay inside the window.
— 03 Turnaround

57min recharge

Compared with a 129.5min conventional-coolant cycle, UltraST supports about 4 cycles per day and reduces standby coolant inventory.
— 04 Safety path

Shape-stabilized · no free-liquid path

Damaged packaging does not create a liquid leakage or contamination path. The chemistry is PFAS-free, fluorine-free, and formaldehyde-free for regulated documentation packages.

— Attribute	UltraST PCM module	Conventional ice pack / gel coolant
2–8 °C compliance window	39.6h +11.4h	28.2h
Lid-open recovery	10.2min 2.6× faster	26.4min
Recharge / conditioning	57min high throughput	129.5min
Daily cycles	About 4 cycles/day	About 1.5 cycles/day
Leak contamination path	None — shape-stabilized, sealed form	Present — liquid / gel phase can leak
Chemistry package	PFAS-free · Fluorine-free · Formaldehyde-free	Depends on coolant formulation and documentation
Evidence basis	45L shipper · 12 °C ambient · equal 3.21kg PCM · 3-point monitoring · 51,000+ records	Same test baseline

Test conditions are from the public UltraST product site; specific lanes still need validation by shipper, payload, ambient profile, lid-opening frequency, and regulatory requirements.

View UltraST test evidence ↗ UltraST cold-chain site · Test data

03 / Project conditions required

What we need before a fit assessment.

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.

— Product & window

Validated temperature window, stability budget, product mass and form factor, freeze-sensitive flag.

— Route & mode

Origin / destination lanes, mode mix (air / road / sea), planned vs. worst-case transit duration, customs exposure.

— Ambient envelope

Seasonal profile, hot / cold worst-case, tarmac dwell expectations, intermediate storage temperature.

— Existing packaging

Current shipper system, container size, coolant type, qualified hold time, observed excursion rate.

— Target outcome

Hold-time target, excursion rate reduction, consumable cost reduction, reusable-fleet sizing.

— Compliance scope

GxP / GDP requirements, qualification format, audit history, lane-specific stability commitments.

Have operating data? Explore sizing tools

04 / Sizing tool · Interactive

PCM selector & dosage.

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-change temperature. The required PCM mass updates live, with a safety margin. Outputs are directional pending lane validation.

Each preset fills in typical insulation, duration and temperatures. You can fine-tune every value in the next steps.

Surface area

m²

Hold duration

Insulation U-valueVIP panel

W/(m²·°C)

Heat leaks in through all six faces. A lower U-value (better insulation) means a slower leak — and less PCM.

Ambient temp

°C

Target temp

°C

Resulting ΔT30.0 °C

ΔT is the gap the PCM has to hold against — ambient minus target. A wider gap demands more PCM.

Phase-change point

Enthalpy

kJ/kg

Safety factor

At its melting point the PCM absorbs a large latent heat at near-constant temperature — the flat plateau. Higher enthalpy means less mass.

Sized

PCM dosage required (incl. safety factor)

—kg

Theoretical (no safety)

— kg

Temp difference ΔT

— °C

Unit heat load

— W/m²

Total heat load

— kJ

Phase-change temperature

—

Turn this dosage into a real SolarCool / UltraST configuration — our engineering team can validate it on your lane.

Discuss this application Discuss this application

Need the bilingual (中文 / EN) version? Open the full-screen calculator →

05 / Validation & review path

From product selection to volume supply.

— 01

Lane conditions submitted

You share window, route, ambient envelope, packaging baseline, and target outcome. We return a written fit assessment within ~5 business days.

— 02

Chemistry & module review

Joint review of PCM chemistry, encapsulation, and module geometry for your window and shipper format. Includes chemistry data package and qualification scope.

— 03

Lane pilot plan

Scoped pilot on a single representative lane, with temperature instrumentation, worst-case ambient profile, and a defined qualification window.

— 04

Qualification & rollout

Lane qualification data, GxP documentation, and recommendation for additional lanes. Rollout decisions based on validated thermal evidence.

Discuss this application Start thermal-capacity sizing

06 / Technical resources

Build your internal case.

→ 01

PCM chemistry data package

Phase-change temperature selection by validated window, latent heat capacity, encapsulation chemistry, freeze / thaw cycle data, leachable / extractable summary.

PDF · per windowRequest →

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