Adhesive Liquid Crystal Temperature Indicator Strips — 100/Bag (240-A420-000)
These passive, battery-free temperature indicator strips use cholesteric liquid crystal technology to deliver an immediate visual read of surface temperature: the black strip body transitions to a green band at the calibrated target temperature, providing documentation-grade cold chain evidence with no instruments, power, or software required. Supplied with a pressure-sensitive adhesive backing, they apply directly to specimen containers, vaccine carriers, reagent kits, and shipping boxes for continuous monitoring from point of departure through point of delivery. Each bag contains 100 strips for high-volume cold chain programs.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-A420-000 |
| Product Type | Temperature Indicator Strip |
| Technology | Liquid Crystal (cholesteric phase) |
| Backing | Pressure-Sensitive Adhesive |
| Display Color | Black substrate — indicates green at target temperature range |
| Power Required | None — fully passive |
| Sterility | Non-Sterile |
| Pack Size | 100/Bag |
| Country of Origin | USA (California) |
Applications
- Vaccine cold chain monitoring from warehouse storage through point-of-care delivery
- Biological specimen transport — blood, serum, plasma, and tissue samples
- Laboratory reagent and kit temperature compliance documentation
- Pharmaceutical and biologic cold chain GxP documentation
- Cold room and refrigerated equipment surface temperature verification
- High-volume shipping programs where per-shipment electronic data loggers are cost-prohibitive
Quality & Procurement
Made in USA (California), these Caplugs® Evergreen temperature indicator strips provide passive cold chain documentation suitable for programs operating under AABB, CAP, WHO, CDC, and GxP temperature monitoring guidelines. The 100/Bag bulk format is designed for high-volume operations managing dozens to hundreds of monitored shipments per week, delivering a low per-unit cost that makes strip-per-shipment programs practical at scale. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with tiered pricing available for institutional, clinical, and pharmaceutical procurement programs. No batteries, calibration cycles, or software infrastructure are required — making the 240-A420-000 a straightforward drop-in addition to any cold chain quality program.
Frequently Asked Questions
How does the strip indicate temperature?
The strip uses a cholesteric liquid crystal layer that responds to surface temperature by changing color. The black substrate displays a green band when the surface reaches the calibrated target temperature range, providing an immediate visual read without any instruments or power source.
Can these strips be used as the sole temperature record for regulatory documentation?
These strips provide passive visual temperature evidence widely used to support cold chain documentation under AABB, CAP, WHO, CDC, and GxP guidelines. Whether a strip alone satisfies a specific accreditation requirement depends on your program's written procedures and the applicable standard — consult your quality or compliance team for your specific use case.
Are the strips reusable?
No — each strip is single use. Depending on the specific strip variant, the color response may be irreversible (permanently documents a temperature excursion) or reversible (reads current temperature only). Confirm the response type for your monitoring program before deploying at scale.
What surfaces can the adhesive backing bond to?
The pressure-sensitive adhesive is designed to adhere to specimen containers, vaccine vials and carriers, reagent kit packaging, corrugated shipping boxes, and cold room equipment surfaces. Adhesion performance on very cold, wet, or non-standard surfaces should be verified under your actual use conditions prior to full deployment.