Temperature indicators reveal shipping conditions

Rapid visual assurance that quality control standards have been monitored during storage and transit of temperature-sensitive pharmaceutical products is provided by a range of temperature indicating labels and monitoring devices from Dry Pak Industries, of California.

Two types of temperature-indicating labels - reversible and irreversible - show the current temperature of a product or indicate whether a critical temperature threshold has been violated. The reversible labels use a liquid crystal thermometer that indicates current temperature on the 'green bar' section of the label. Irreversible labels and tags monitor conditions from -30°C to +300°C, and indicate how long a product has been exposed above critical temperatures. WarmMark and ColdMark Time Temp tags are designed with three windows. These turn a tell-tale red as a product is exposed to temperatures above or below a critical threshold for a brief time (30 minutes), a moderate time (2 hours) or a prolonged time (2 days).

A range of strip-chart temperature recorders provides cost-effective, reliable, continuous monitoring of temperatures while products are in transit. Placed inside a cargo container at the beginning of shipment, these disposable recorders produce a printed chart of temperature variation once the shipment reaches its destination. They are available in various run times from 5-60 days.