Compressive strength is the capacity of a material to withstand loads tending to reduce size. For finished packages, compression test can be used to measure compressive resistance, deformation and stacking capability.
ISO 12048 - Packaging -- Complete, filled transport packages -- Compression and stacking tests using a compression tester
C611M Box Compression Tester can be used to measure the compressive resistance, deformation and stacking capability of corrugated cartons and box packages.