How It Works
Reefer Containers & Cold Chain Shipping Explained
5 min read
Reefer (refrigerated) containers maintain a controlled temperature so perishable and sensitive cargo arrives in good condition. They are the backbone of international cold chain shipping.
How reefers work
A reefer container has an integrated refrigeration unit that maintains a set temperature, drawing power from the ship, terminal or a generator (genset) during road movement. Some cargo also requires controlled humidity or atmosphere.
Typical cold chain cargo
- Fresh produce, meat, seafood and dairy.
- Frozen foods requiring sub-zero temperatures.
- Pharmaceuticals and vaccines needing tight temperature control.
Best practices
- Pre-cool cargo before stuffing and do not block air channels.
- Set and verify the correct temperature for the product.
- Use temperature monitoring and keep the cold chain unbroken end to end.