ISTA Procedure 1E Unitized Loads

Testing Standard:

ISTA 1E Integrity Testing for Unitized Loads ie. ISTA Procedure 1E Unitized Loads

Standard Number

Standard Title
Unitized Loads of Same Product

Overview for ISTA Procedure 1E Unitized Loads:

ISTA 1E is a basic procedure of non-simulation integrity performance testing. According to the ISTA 2014 Booklet Edition, “Test Procedure 1E is an integrity test for unitized loads of the same institutional packaged products. A unitized load is defined 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 be 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.” Test 1E essentially has the same overview requirements as the other procedures in the series. It is known that this test of course can be used to evaluate the performance of a packaged product. It is also known that the analysis of final data of this procedure could possibly compare or lead to new design alternatives. The inside product and the exterior package should be assessed as one unit, throughout the entirety of the procedure. 

ISTA 1E Integrity Testing for Unitized Loads is a testing procedure developed by the International Safe Transit Association (ISTA) for evaluating the effectiveness of the packaging used to transport unitized loads. This procedure is designed to determine whether the packaging provides sufficient protection to the product during shipping and handling.


ISTA Procedure 1E Unitized Loads involves subjecting the unitized load to a series of tests to determine its ability to withstand different types of stress. These tests include vibration testing, shock testing, compression testing, and drop testing. The testing procedure is conducted in a controlled environment to simulate the various conditions that the unitized load may encounter during transit.


During the testing process, the package is inspected for signs of damage, such as cracking, tearing, or deformation. The product inside the packaging is also evaluated for any damage or changes that may have occurred due to exposure to external forces.


By following the ISTA 1E Integrity Testing procedure, manufacturers and shippers can ensure that the packaging used to transport unitized loads is robust enough to protect the product from damage during transportation. This procedure also helps to reduce any potential losses due to damage and thus helps to save money.

Throughout the ISTA Series Procedures, the shipper (the company and/or persons who owns the packaged product must mention what is seen as too much damage to the product. The damage tolerance level that is allowed must also be mentioned. And lastly, the original shipper must also examine the correct method in deciding the correct product condition at the end of the test as well as acceptable package condition at the end of the test. 

This procedure may also be closely related to the ISTA General Simulation Performance Test Procedure 3E. This procedure could be used as a starting point for comparing various package design types. Purple Diamond Testing offers ISTA 1E Testing as part of our packaging distribution testing services. It is recommended that at least one sample is used per new test. If double testing is needed to ensure one hundred percent accuracy, it is recommended that the test is performed one time, but also recommends performing the procedure five or more times using a new sample for each test performed. 

By the end of this test, packages that have already gone through this kind of testing must not be used for assuming the standard conditionings. One can find perfect testing conditioning by making sure that before the shipper sends the package, or sample, to us that the sample is “overpacked” for shipment. If it decided that the original packaging does not work and is not good, the packaging experts at Purple Diamond may recommend an innovative design or engineering outlook to get your product to market as fast and efficiently as we possibly can. 

Rationale for ISTA Procedure 1E Unitized Loads:

ISTA 1E – Unitized Loads of Same Product. Can be used to compare relative performance of package and product design variations using vibration (random or fixed displacement) and shock tests (incline impact and rotational edge drop). The procedure is used to create harsh worst-case hazards in a laboratory environment while comparing multiple design variation packaging systems. It is possible to evaluate either single or multiple product unitized loads, which is extremely convenient for the company needing their packaged products evaluated. This means most of the time as little as one or two samples can be sent over to the laboratory for testing.

If this is a test you need and are interested in but have more questions, please reach out to us via the contact page. By filling out the form you will be able to send a request and we will get back to you. OR you can book time for a phone or facility tour if you are local to the Lehigh Valley. Purple Diamond packaging experts are happy to put together a comprehensive testing plan for you, and if necessary, re-design and re-engineer additions, depending on how the test goes. 

Key Points:

Related Standards:

At Purple Diamond, we offer a free consultation or a guided tour of our facilities. If you’re nearby, feel free to drop by and see our packaging and team. Consultations can be done over the phone or on zoom, so choose what suits you best. To get in touch, go to our Contact Us page and fill out the form or book an appointment using the calendar below. Our goal is to assist you in any way possible, so please don’t hesitate to contact us. Our website contact form is located at, but we promise to get back to you soon, no matter which method of communication you choose. Thank you so much for reading down this far and thank you for considering Purple Diamond as your dedicated testing, engineering, and design facility for all of your packaging needs.

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