Pinkmark Product Line

Pinkmark LX™

In Development

A printable, adhesive cold-chain indicator label built on the same proven chemistry as the Pinktail line. Apply directly to vaccines, biospecimens or biologics for at-a-glance temperature integrity monitoring.

0 °C

–18 °C

–37 °C

–67 °C

Print-Activated

Activated automatically during printing in an ultra-cold environment. Ready to monitor the moment it’s applied.

≤ 1″ × 1″

User-Activated

Features a membrane-style button pressed to activate. Gives operators full control over when monitoring begins.

≈ 1″ × 1″

Get Notified How It Works

How It Works

Simple, Visual Monitoring

The Pinkmark LX uses the same thermochromic chemistry as the Pinktail line, re-engineered into a compact label format that can be printed by standard printers in ultra-cold environments.

Print & Apply

Print the Pinkmark LX label using a standard printer in an ultra-cold environment, then apply it directly to the product — a vaccine vial, biospecimen container, or storage vessel.

Activate

The label activates automatically during printing or via a membrane-style button press. Once active, the label displays a bright pink color confirming it is monitoring.

Monitor

The label remains pink as long as the product stays below its signal temperature. If the heat threshold is breached, the label transitions from pink to clear — providing an unmistakable visual alert.

Proven Chemistry

Same Science, New Format

The Pinkmark LX leverages the same thermochromic chemistry trusted in the Pinktail BX line — re-formulated for a thin, printable label that delivers the same reliable color-change response.

Pink = Safe

When the product remains at or below the designated signal temperature, the label stays bright pink. The vivid color is easily visible at a glance, even through packaging, confirming cold-chain integrity is maintained.

Clear = Compromised

If the product is exposed to temperatures above the signal threshold, the indicator chemistry causes the pink pigment to fade to clear. This irreversible transition provides a permanent record of heat exposure.

Applications

Designed for Direct-to-Product Monitoring

The Pinkmark LX is purpose-built for environments where a compact, adhesive indicator applied directly to the product is the ideal monitoring solution.

Vaccine Vials & Syringes

Apply directly to individual vaccine vials or pre-filled syringes for per-unit cold-chain verification from manufacturing through last-mile delivery.

Biospecimen Containers

Label cryovials, blood bags and tissue sample containers directly, providing sample-level temperature monitoring throughout storage and transit.

Cold-Chain Logistics

Integrate into existing labeling workflows for high-volume shipments, giving every unit its own built-in temperature integrity witness.

Technical

Pinkmark LX™ Preliminary Specifications

Form Factor

Adhesive label

Size (User-Activated)

≈ 1″ × 1″ (25 mm × 25 mm)

Size (Print-Activated)

≤ 1″ × 1″ (25 mm × 25 mm or smaller)

Activation

Print-activated or membrane button press

Printer Compatibility

Standard label printers (ultra-cold environment)

Chemistry

Thermochromic (same as Pinktail line)

Color Change

Pink → Clear on heat threshold breach

Signal Temperatures

0 °C, –18 °C, –37 °C, –67 °C

Operating Range

–200 °C to 50 °C

Specifications are preliminary and subject to change as the product completes development. Final specs will be published upon release.

Compare

Pinkmark LX vs. Pinktail BX

Both products use the same trusted thermochromic chemistry. Choose the form factor that fits your workflow.

Feature	Pinktail BX™	Pinkmark LX™
Form Factor	Self-contained vial	Adhesive label
Placement	Inside storage box / container	Applied directly to product
Activation	Twist cap & shake	Print-activated or membrane button
Chemistry	Thermochromic (pink → clear)	Thermochromic (pink → clear)
Signal Temperatures	0 °C to –67 °C	0 °C to –67 °C
Best For	Box-level monitoring	Per-unit / per-vial monitoring
Status	Available now	In development