The full form of ILR in the cold chain is Ice Lined Refrigerator. It is a specific medical refrigerator meant to provide a constant temperature of +2° C to +8°C for storing vaccines, blood bags, biological samples, and other medically sensitive items requiring controlled temperatures. An Ice Lined Refrigerator differs from a regular refrigerator in that it has an ice lining or ice pac... https://www.bionicsscientific.com/laboratory-refrigerator/ice-lined-refrigerator.php