Refrigeration prolongs shelf life by lowering a product's temperature, which delays metabolic deterioration and decay by microorganisms.
Chemical coolants (e.g., gel refrigerants) are the refrigerants of choice for most carriers.
Freeze the coolants (gel refrigerants) according to manufacturers' guidelines.
Pre-cool the insulated container
For shipments containing liquid or perishable products that could melt or thaw, you must double bag the products using at a minimum 2 mm watertight plastic bags. Instead of double-bagging your products, you can line the inside of the EPS container with 2 mm or thicker plastic liner and absorbent material.
Arrange products compactly inside the insulated container, allowing space for coolants. Place sufficient amount of coolants on top of and around the products.
Fill all void space with EPS to prevent product movement.
Close the bag securely.
Close and securely seal the insulated container with pressure-sensitive plastic tape.
Close and securely seal the corrugated box with pressure-sensitive plastic tape. Apply the same tape over all box flaps and seams to restrict air infiltration.
