SAMPLES NEEDED
1 or more, depending on your needs
TYPICAL TURNAROUND
1-2 days
You probably need this if
You buy or make corrugated boxes and need to verify the board meets its ECT rating
A box is failing in the warehouse or in transit and you need to know whether the board is to spec
You’re changing board grade, flute or supplier, or down-gauging to save cost
You need ECT data for a packaging specification or a box compression estimate
What the test involves
01
Specimen preparation
Specimens are cut from the board to a precise size, with the flutes running vertically.
02
Conditioning
Specimens are conditioned in the standard atmosphere for paper and board testing (TAPPI T402) before testing.
03
Edge crush
Each specimen is loaded on its edge in a compression tester until it fails, and the peak load is recorded.
04
Reporting
Results are reported as edgewise compressive strength (ECT), averaged across the specimens tested.
What to send us
Flat sheets of the board or finished boxes. We’ll confirm how many.
Design drawings or a packaging specification, if you have them.
Ship to 9708 Industrial Drive, Bridgeview, Illinois 60455.
Not sure the count is right for your configuration? We confirm it with you before you ship anything.
Related standards
Common questions
What is the edge crush test?
It measures the edgewise compressive strength of corrugated board: the load a small column of board carries on its edge before it crushes. Results are usually reported in pounds per inch, the same units as the ECT rating on a box certificate.
What’s the difference between ECT and burst (Mullen)?
ECT relates most closely to stacking strength, which matters for boxes stacked in warehouses and trailers. Burst measures resistance to rupture from force pushing through the board. A box certificate shows one rating or the other.
Not certain ECT is the right test?
Send us an email, give us a call, or schedule time to chat. We can answer your questions and let you know which standard applies for your situation.
