Reading the Fine Print on Durability: A Procurement Team's Guide to Device Certifications
A spec sheet for a rugged smartphone or tablet can read like a regulatory filing — dense abbreviations, numeric codes, and certification logos stacked alongside processor specs and battery capacity. For enterprise procurement teams evaluating devices for field deployment, these certifications carry genuine operational significance. They are also, at times, presented in ways that obscure as much as they reveal.
Understanding what durability certifications actually test, what they do not test, and how manufacturers sometimes stretch their marketing claims is not merely a technical concern. It is a procurement discipline with direct implications for device performance, workforce productivity, and total cost of ownership. This guide is designed to give procurement and operations leaders the vocabulary and analytical framework to evaluate these standards on their own terms.
The IP Rating System: Precision in a Two-Digit Code
The Ingress Protection rating — universally abbreviated as IP — is defined by the International Electrotechnical Commission under standard IEC 60529. It appears on virtually every rugged device spec sheet and is among the most commonly misunderstood certifications in the category.
An IP rating consists of two digits. The first digit indicates protection against solid particulate ingress, on a scale from 0 (no protection) to 6 (complete protection against dust). The second digit indicates protection against liquid ingress, on a scale from 0 (no protection) to 9K (protection against high-pressure, high-temperature water jets).
The ratings most frequently cited on rugged devices are IP65, IP67, and IP68.
IP65 certifies dust-tight protection and resistance to low-pressure water jets from any direction. It is appropriate for environments where splash exposure is likely but immersion is not.
IP67 certifies dust-tight protection and the ability to withstand immersion in up to one meter of fresh water for up to 30 minutes. This rating appears frequently on devices marketed to construction and field service applications.
IP68 certifies dust-tight protection and immersion resistance beyond the IP67 threshold, with the specific depth and duration defined by the manufacturer. This is where procurement teams should pay close attention: because manufacturers set their own IP68 parameters, two devices carrying identical IP68 ratings may have been tested to materially different standards. One may be rated to 1.5 meters for 30 minutes; another may be rated to 3 meters for 60 minutes. The certification label alone does not convey this distinction.
A further caveat applies across all IP ratings: testing is conducted with fresh water under controlled laboratory conditions. Exposure to saltwater, cleaning chemicals, hydraulic fluid, or other industrial liquids is not covered by the standard. Procurement teams deploying devices in marine environments, chemical processing facilities, or food production settings should not rely on IP ratings alone.
MIL-STD-810: The Military Standard That Became a Marketing Term
MIL-STD-810 is a United States Department of Defense test methodology standard, currently in its H revision. It defines a battery of environmental stress tests covering drop resistance, vibration, temperature extremes, humidity, altitude, sand and dust exposure, and other conditions. It was originally developed to ensure that military equipment could survive the rigors of field deployment.
In the commercial rugged device market, MIL-STD-810 compliance has become nearly universal — and therein lies the problem. The standard does not specify which tests a device must pass to claim compliance, nor does it establish a minimum performance threshold. A manufacturer may conduct two of the standard's 29 test methods, pass both, and legitimately claim MIL-STD-810 compliance. Another manufacturer may conduct all 29 methods under the most demanding test parameters available and make the same claim.
When evaluating MIL-STD-810 compliance, procurement teams should request the full test report, not merely the compliance claim. The report should identify which test methods were conducted, the specific parameters applied, and the results. Reputable manufacturers make this documentation available. Those who resist the request are, in effect, answering the question.
Pay particular attention to the drop test methodology. MIL-STD-810 Method 516 covers shock and drop resistance, but the test height, surface type, and number of drops vary. Devices marketed to construction or industrial applications should be tested to at least 1.2 meters onto concrete — a standard that not all compliance claims reflect.
ATEX and IECEx: Certifications That Can Be Life-Safety Requirements
For enterprises operating in environments where flammable gases, vapors, or combustible dusts may be present — oil and gas facilities, grain handling operations, chemical plants, paint manufacturing — two additional certification frameworks become relevant: ATEX and IECEx.
ATEX is a European Union directive governing equipment intended for use in explosive atmospheres. IECEx is the International Electrotechnical Commission's equivalent international scheme. In the United States, the analogous framework is the NEC (National Electrical Code) hazardous location classification system, administered through UL and CSA certifications.
These certifications are not marketing differentiators. In regulated industries, they are legal requirements. Deploying a non-certified device in a classified hazardous location is an OSHA compliance issue, not merely a procurement preference. Procurement teams sourcing devices for these environments should confirm that the device carries the appropriate intrinsic safety certification for the specific zone or division classification of their operational environment, and should involve their environmental health and safety team in the evaluation.
Comparing Devices Across Competing Standards
One of the more common challenges in rugged device procurement is comparing devices that carry different certifications or have been tested to different versions of the same standard. A few practical approaches help structure this comparison.
Request independent test data where available. Some manufacturers commission third-party testing laboratories to validate their compliance claims. Independent validation carries more weight than self-certification.
Map certifications to your specific operational hazards. A device with an exceptional IP68 rating but limited drop test data may be appropriate for a marine utility application but poorly suited to a concrete-floored warehouse. Build a hazard profile of your operational environment before evaluating devices, and score certifications against that profile rather than treating all ratings as equally relevant.
Look for consistency across the certification portfolio. A device with strong IP ratings but minimal MIL-STD-810 test coverage may reflect a manufacturer that optimized for one marketing claim while neglecting others. Comprehensive, well-documented certification coverage is a reasonable proxy for overall engineering rigor.
Scrutinize the warranty terms alongside the certifications. A manufacturer's willingness to back durability claims with a meaningful warranty — particularly one that covers accidental damage without onerous exclusions — is a practical signal of confidence in their own test results.
Putting Certifications in Context
Certification standards are necessary but not sufficient for rugged device procurement. They establish a baseline of validated performance under defined test conditions. They do not guarantee that a device will perform flawlessly in every combination of environmental stressors your field teams encounter, nor do they account for the quality of device management software, repair network availability, or the manufacturer's long-term product support commitment.
The most effective procurement teams treat certifications as a first-stage filter — a mechanism for eliminating devices that cannot meet minimum durability thresholds — and then apply operational testing, reference checks, and total cost modeling to make the final selection. A device that clears every relevant certification bar and then performs reliably across a pilot deployment is a device worth deploying at scale.
The acronyms on the spec sheet are a starting point. The conversation with the manufacturer about what those acronyms actually represent is where the real procurement work begins.