ISTA 3A Testing for Parcel Delivery Shipments
The general simulation test for individually packaged products moving through a parcel network, up to 150 lb. Run at an ISTA certified lab in Aurora, Ontario, on our own drop and vibration rigs.
- The Procedure Most Buyers Mean: When a customer asks for ISTA testing on something shipped by courier, 3A is almost always the one.
- We Confirm the Variant Before You Pay: Four package types exist and each one runs differently. Send us the details and we will tell you which is yours.
- Drop, Vibration and Impact In House: Every rig the procedure calls for is on site in Aurora, so the schedule is ours to control.
- On Our Accredited Scope: The ISTA 3 Series sits on our A2LA ISO 17025 scope, so the report is accredited data.
Accredited package testing
ISO/IEC 17025
A2LA #5179.01
ISTA certified
Certified test laboratory
*Send the packed weight, the three outside dimensions, and whether the product is fragile or holds liquid. That is enough for us to confirm the requirement and quote it.
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What is ISTA 3A?
ISTA 3A is a general simulation test for individually packaged products shipped through a parcel delivery system, weighing 150 lb (70 kg) or less. It is the procedure most people mean when they say a product needs ISTA testing, for the simple reason that most products ship by courier.
General simulation is what separates it from the lighter procedures. The 1-series screens a package for basic strength with no simulated hazard at all. The 2-series adds one element of a real distribution environment. 3A reproduces the environment: conditioning, a full shock sequence, vibration under load, and a hazard impact that stands in for landing on the corner of another package in a trailer.
The ISTA 3 Series is on Megalab’s A2LA ISO/IEC 17025 scope, and we are an ISTA certified laboratory audited by ISTA. A 3A report from us is accredited data, not an in-house opinion.
Which of the four package types is yours?
3A is not one test. Your package gets classified into one of four types first, and the type changes the shock sequence and adds tests at the end. This is the part worth knowing before you call, because it is the first thing we will ask about.
- Standard: the default, and most packages land here.
- Small: under 800 in³ (13,000 cm³), longest dimension 14 in (350 mm) or less, and 10 lb (4.5 kg) or less. Small packages run a different shock sequence, inside a bag.
- Flat: shortest dimension 8 in (200 mm) or less, the next-longest at least four times the shortest, and volume of at least 800 in³. Flat packages pick up a concentrated impact test.
- Elongated: longest dimension 36 in (900 mm) or more, with the other two each 20 percent or less of it. Elongated packages pick up a bridge impact test.
A package that fits both the Flat and the Elongated definitions is tested as Elongated. If yours sits near a boundary, send the dimensions and we will settle it rather than leaving you to guess.
What the test involves
3A runs as a fixed published sequence, on the same specimens from start to finish. In order it covers:
- Preconditioning, then atmospheric conditioning where the specification calls for it.
- A shock sequence of edge, corner and flat drops, at heights set by the packed weight.
- Vibration, run both with a top load applied and without it.
- A second shock sequence, ending on the hazard impact.
- Type-specific tests for Flat and Elongated packages, and a leak test where the product holds liquid.
The conditioning is the part that catches people out on schedule. It happens before any of the interesting work and it is not quick, so a job that looks like two days of drops usually is not. We give you the real duration in the quote rather than after you have committed.
How ISTA 3A differs from the procedures next to it
Most of the confusion we see comes from four places.
- A 1-series pass does not substitute for 3A. The 1-series is screening. If your customer wrote 3A into the specification, a 1A report will not close it out.
- 3A replaced the old 2D and 2E. If a legacy specification still cites either one for small parcel, 3A is what runs now.
- 3A is parcel, not freight. If the product travels less-than-truckload, the procedure is ISTA 3B, which works differently and brackets weight differently.
- It is not a compression test. 3A applies the stacking load during vibration rather than as a separate compression step. If your customer wants a standalone compression report as a deliverable, tell us at the start and we will add one.
What we need from you to quote it
Four things, and none of them need you to have read the standard:
- The packed weight and the three outside dimensions.
- Whether the product is fragile or holds liquid.
- How it ships, and whether any leg of that is by air. 3A carries an optional step for air-shipped product, so tell us and we will scope it correctly.
- Any customer specification that names the procedure, if you have one.
From that we confirm the package type, the sample count, the sequence that applies and the schedule, then send a quote. If what you actually need turns out to be a different procedure, we will tell you that instead of quoting the one you asked for.
Related package testing
3A sits inside the wider ISTA series. If the product travels as freight rather than parcel, see 3B for less-than-truckload, 3E for a uniform truckload and 3F for a mixed retail pallet. Below the simulation procedures sit 2A and 1A. For a customer-defined distribution cycle rather than a fixed sequence, see ASTM D4169, and our guide to choosing between ISTA and ASTM D4169 covers which one a given buyer usually means.
Retailer and carrier programmes reuse the same drop and vibration blocks: Amazon, FedEx and Costco package testing. Everything sits under package testing services.
Frequently Asked Questions
Common questions about ISTA 3A testing.
A general simulation test for individually packaged products shipped through a parcel delivery system, up to 150 lb (70 kg). It puts a packed unit through conditioning, drops, vibration and a hazard impact in a fixed published sequence, and reports whether the packaging protected the product.
It depends on the package type and on whether the product is fragile or holds liquid. Fragile and liquid products need more, and ISTA encourages testing above the minimum in any case, because one specimen tells you whether that package survived rather than whether the design does.
Send us the weight, the dimensions and the product type and we will confirm the count with the quote. It is not worth guessing at, because sending too few means starting the sequence again.
Severity, and they are not interchangeable. The 1-series screens a package for basic strength with no simulated hazard. The 2-series adds a single element of real distribution to that base. 3A simulates the distribution environment properly, which is why buyers write it into specifications.
Passing 1A does not satisfy a 3A requirement, even at the same weight. If a customer named the procedure, run the one they named.
It comes down to how the product travels. 3A is for parcel delivery, the courier network. 3B is for less-than-truckload freight, and it has several distinct paths depending on whether the load is standard, cylindrical or palletized.
If the product moves both ways, or you are not sure which describes your route, tell us the channel and we will confirm it.
The bench work is short. The conditioning in front of it is what sets the schedule, and that varies with the package type and with whether the optional conditioning steps apply.
We quote a real date rather than a range, and because the drop, vibration and impact rigs are all in our own building in Aurora, that date does not depend on another lab’s queue.