What is ECT – Edge Crush Test?

ECT, or Edge Crush Test, measures the stacking strength of corrugated board. It indicates how much compressive force the edge of a corrugated board sample can withstand before collapsing. ECT values are commonly used when selecting corrugated boxes for shipping and stacking. Higher ECT performance may be required for heavier products or demanding distribution environments. It is an important specification when comparing corrugated box strength.