Free evaluation kit Visual transport indicators

Meet Pinktail.
One look. Total confidence.

The visual indicator that travels with your samples inside the box. Reliable down to -80°C.

No electronics.
No calibration.
No ambiguity.

Request your free 2-pack

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We’ll only use this to ship your indicators and follow up once.

CryoVeritas indicator in use with frozen samples

What's in the kit

We'll send you a professional evaluation pack containing three Pinktail 0°C indicators. These are the same production-grade sensors used by global logistics teams to monitor high-value biologics and vaccines.

3x Ready-to-use indicators
Instruction guide for activation
Reference card for state validation

Why teams use CryoVeritas

Travels with Samples

Unlike external labels, Pinktail sits directly on your vials or trays inside the box.
Deep Freeze Ready

Operates reliably from -80°C up to 0°C. Perfect for dry ice and ultra-low temp shipments.
Pink means Protected

Tail starts pink. If heat (>0°C) is detected, it turns clear instantly. No ambiguity.

How it works

Activate

Simply twist, then gently mix by flicking and shaking until the indicator turns deep pink.

Place

Set the activated indicator directly on your vials or trays inside the shipping box.

Verify

On arrival, check the tail. Pink means safe. Clear means the temperature limit was exceeded.

Get a free 2-pack Limited supply • Ships free anywhere

See Pinktail in action

Watch how easy it is to activate, place, and verify your indicator.

Heat response at a glance

At 25 °C, the indicator will remain pink for 15 minutes before turning clear.

Temperature	Approx. Time Until Clear
25 °C	~15 min
4 °C	~3 hours
< 0 °C*	No change

→ Higher temperatures → faster color change

→ Lower temperatures → slower color change