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ISTA 1E Package Testing

ISTA 1E testing covers the testing of unitized loads and its tolerance to damage. As an ISTA and ISO 17025 certified lab, we realize the importance of ISTA 1E integrity testing. Meeting the ISTA ISTA 1E requirements can be difficult. We understand the challenges and guide companies through the process.

Keystone Compliance creates an accurate test plan to eliminate expensive over-testing. Our accurate test reports are delivered quickly. Keystone also partners with customers to achieve package compliance. Our pricing is competitive and we offer volume discounts.

Request a quote and find out first hand about our competitive pricing, timely process, and outstanding reputation. Contact us to receive more information on ISTA and unitized load package testing.

Summary of ISTA 1E Integrity Testing

ISTA 1E is an integrity test for unitized loads of the same institutional or retail packaged-products. The standard defines a unitized load as one or more products or packaged-products usually on a skid or pallet, but always secured together or restrained for distribution as a single load.

Examples would include a stretch-wrapped pallet load of individual containers, a single non-packaged machine banded to a pallet and a pallet with a corrugated tray, tube and a cap.

For ISTA 1E, the shipper must determine the following prior to testing:

  • What constitutes damage to the product.
  • What damage tolerance level is allowable, if any.
  • The correct methodology to determine product condition at the conclusion of the tests.
  • The acceptable package condition at the conclusion of the test.

The test sequences for ISTA Procedure 1E include the following tests:

  • Vibration Test Block.
  • Random.
  • Shock Test Block-Impact.
  • Shock Test Block-Rotational Edge Drop.

The chart below is from the standard and provides more guidance on the testing procedure and requirements:

Sequence #

Test Category

Test Type

For ISTA Certification



Vertical Linear Fixed Displacement/ Alternative Random




Incline (Conbur)/ Alternative Horizontal Impact




Rotational Edge Drop


Expert ISTA 1E Unitized Load Package Testing

In addition to ISTA 1E testing, Keystone has a full scope of expertise including leak penetration, sterile barrier, and temperature validation. We can accommodate flexible and rigid packages of all sizes, including large pallets. Lastly, our team strives to give our customers more time and energy on product development instead of testing.

Contact us to learn first hand why so many companies partner with Keystone Compliance to achieve their ISTA 1E integrity certification needs.