ISTA 1B Package Integrity Testing

ISTA 1B: Package Integrity Testing for Packaged-Products Over 150 lb

ISTA 1B package testing evaluates the performance of a package greater than 150lbs from normal transportation hazards. As an ISTA and ISO 17025 certified lab, we realize the importance of integrity testing. Meeting the ISTA 1B requirements can be difficult. We understand the challenges and guide companies through the process.

Keystone’s proven process helps avoid product launch delays due to communication throughout the test process. We also provide accurate test reports that are delivered quickly. Our pricing is competitive and we offer volume discounts. Lastly, Keystone Package Testing takes pride in having a great reputation of helping customers achieve their package certifications.

Request a quote to learn why we are one of the fastest growing package test labs in the country. Contact us to receive more information on ISTA 1B testing.

Summary of ISTA 1B Package Compliance

ISTA Procedure 1B Package Testing is for products weighing over 150 pounds. The test procedure is used to determine the ability of a package to protect the product from normal transportation hazards. This test procedure is for individually-packaged products.

When applied correctly, the ISTA 1B procedures provide shortened package development time, protection of products with reduced damages, and balanced distribution costs.

The test sequence of ISTA 1B transit testing includes conditioning, vibration, and various types of shock.


The conditioning is to ensure the unit is at ambient temperature. Conditioning and preconditioning are performed to simulate the different environments that a package could encounter throughout the distribution channel.


The vibration is a fixed displacement vibration. The shock testing includes drop, incline impact, horizontal impact, or rotational edge drop. Only one shock test method is to be used. Units do not need to be tested for all three methods. The vibration and shock tests are meant to simulate the different hazards that a package could encounter during distribution.


The drop or impact is to occur on each face or side. The drops are to happen in a certain sequence. Impact testing is to occur on four faces. The rotational edge drop involves lifting one edge three to four inches off the ground. That edge of the box is then reinforced with timber or support. Next, the other edge is raised eight inches. The height that it is raised is predetermined by a formula that takes into account the weight of the package.

Lastly, the higher edge is released so that the package drops freely. It is important that it is dropped on a flat and rigid surface.

ISTA 1B Package Testing Procedures

As with ISTA 1A testing, only one test unit is required for ISTA 1B testing.

ISTA 1B contains three sections:

  • Overview provides the general knowledge required before going into the testing laboratory.
  • Testing presents the specific instructions to do the testing in the laboratory.
  • Report indicates what data shall be recorded to submit a test report to ISTA.

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

Sequence #Test CategoryTest TypeFor ISTA Certification
1PreconditioningTemperature and HumidityRequired
2VibrationFixed DisplacementRequired
Inclined Impact
Horizontal Impact
4ShockRotational Edge DropRequired when not testing face 1

ISTA 1B Accredited Package Testing Laboratory

Keystone Package Testing has unique ISTA package testing expertise. We not only provide accredited ISTA 1B testing, but we also provide insight and design guidance when problems arise. Our engineers have significant experience to make recommendations when needed. Our international accreditation with ISTA means that the reports we provide you at the conclusion of testing will be accepted globally.

Our package testing technicians will take the time to look over your quote and ensure that we are not overtesting. We pride ourselves on providing the best service, quality testing, and thorough reports. Contact us for a quote and learn why hundreds of companies test with Keystone each year. We look forward to working with you!


Other ISTA Standards:


Interested in the EMC/EMI, climatic, dynamic, shielding effectiveness, or IP Code testing of a product? Follow the corresponding links or for more information.