Time-Temperature Indicators for Perishable Food Logistics
Vitsab International AB introduces Freshtag, a visual time-temperature monitoring label designed to support food safety, regulatory compliance, and quality assurance across cold-chain and last-mile delivery operations.
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Vitsab International AB has unveiled Freshtag, a time-temperature indicator engineered to provide continuous, cumulative monitoring of perishable food products during storage and transport. The device is intended for use across catering, foodservice, retail, e-commerce, and home delivery environments, where maintaining temperature integrity is critical to food safety and quality.
Addressing cold-chain visibility gaps
In food logistics, temperature deviations often occur during handovers, temporary storage, or final delivery, where continuous digital monitoring may not be available or practical. Freshtag is designed to address this gap by providing a passive, product-level indicator that records cumulative exposure to time and temperature throughout the entire journey.
The label enables stakeholders at any point in the supply chain to assess whether a product has remained within defined temperature limits, without requiring electronic readers, connectivity, or technical training.
Visual time-temperature indication mechanism
At the core of Freshtag’s design is a colour-based time-temperature response mechanism referred to as “Stoplight Technology.” The label remains green while the product stays within acceptable temperature conditions defined for the specific food category. If cumulative exposure approaches critical thresholds, the label transitions to yellow, and finally to red when temperature abuse exceeds allowable limits.
This progressive colour change provides an immediate, language-independent visual status that reflects both duration and severity of temperature deviation, rather than a single-point measurement. The approach allows non-technical users to make rapid, informed decisions regarding product usability.
Compliance and deployment flexibility
Freshtag is manufactured in accordance with FDA and EU food contact requirements and is designed to support HACCP-based food safety management systems. The production process aligns with ISO 9001 quality management standards.
The indicator is suitable for refrigerated, frozen, and passive temperature-controlled environments. Deployment requires no calibration, tools, or activation procedures; labels can be stored, applied, and used as received. This simplicity supports large-scale rollout across decentralized operations such as institutional catering, remote service locations, and distributed delivery networks.
Operational and economic impact
By providing a clear indication of temperature history at the individual item or package level, Freshtag enables early identification of compromised products. This helps operators avoid serving or distributing unsafe food while reducing unnecessary disposal of products that remain within acceptable limits.
The system supports more targeted replacement decisions, lowering costs associated with blanket recalls, refunds, or precautionary waste. At the same time, visible quality assurance at delivery enhances end-user confidence, particularly in direct-to-consumer and meal delivery models.
Role in modern food quality assurance
Freshtag functions as a low-complexity complement to digital temperature monitoring systems, extending visibility to the final stages of the supply chain where electronic monitoring may not be feasible. Its cumulative, visual indication model supports consistent food safety practices while remaining accessible to a broad range of users.
By combining regulatory alignment, ease of integration, and full-history temperature indication, Freshtag represents a practical tool for organisations seeking to strengthen food quality control and cold-chain transparency without adding operational complexity.
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