For perishable products / goods such as medical supplies and pharmaceuticals, it is essential that the warehouses in which they are stored are attentively controlled. Variations in humidity and temperature may have consequences of disastrous proportions if they cause things such as medicines to become ineffective or result in the collapse of vital medical equipment.
Ensuring the temperature stays within a given range is fairly straightforward for a small area. However, when goods get transferred to larger spaces, especially warehouses, a variety of problems may arise. Inconsistencies in temperature can occur as racking or shelves may cause "hot spots" by obstructing air circulation. Temperatures also tend to be higher by heaters or lower next to dock loading bays where the doors are constantly opened and closed.
New technologies now enable the recording and logging of detailed information for changes in things such as the average temperature inside a specific package within a warehouse. These devices, or data loggers, monitor temperature, humidity and other conditions for items in storage or transit. The highest / lowest temperatures are recorded, and any time spent outside of these preset limits.
In temperature controlled warehousing, the packaging in which products are stored is of equal importance. However, with recent changes to the world due to global warming and the overall environmental impact that we have on the planet, packaging has changed considerably. Many conventional solutions for packaging are now scarce, and have brought forth temperature-controlled packaging via PCMs, or phase change materials. PCMs can frequently be reused as well which assists not only in minimizing our carbon footprint, but allows companies to operate more efficiently.