Can ECT board be used for UN tested cartons

Randy asks,

I asked this question a number of years ago but I was wondering if ECT Board can be used for UN Tested cartons or is Mullen tested board still the only thing that can be used?

That’s probably a yes and no answer. ECT is allowed as long as the packaging can pass an ISTANBUL testing protocol and the liner weights do not vary by more than 5%. A wider 10% range has been approved, but not written into the CFR yet.

Don’t forget about the maximum Cobb test.

—Ralph

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