Test EQ

IEC 60068 vs MIL-STD-810 vs UN vs DO-160: Engineering and Procurement Comparison

Important: A test chamber's environmental range does not automatically establish compliance with a particular standard. Final equipment suitability depends on the applicable test method, section, procedure or category, environmental profile, DUT condition, measurement requirements, tolerances, safety requirements and test documentation.

The First Principle: Same Environmental Stress Does Not Mean Same Test Requirement

Consider a temperature test.

At first glance, the requirement appears simple:

Test the product at a low temperature.

But an engineer still needs to determine:

• How low?

• For how long?

• Is the specimen energized?

• Does the specimen generate heat?

• Is the test simulating storage, transportation or operation?

• How quickly should the specimen reach the required condition?

• Is temperature cycling required?

• How many cycles are required?

• What measurements must be recorded?

• What constitutes a pass or failure?

These questions can produce very different test configurations.

For example, IEC 60068-2-1:2025 covers low-temperature testing for specimens that may be heat-dissipating or non-heat-dissipating and may be energized or non-energized. It also distinguishes use, transportation and storage conditions.

IEC 60068-2-14:2023, by comparison, addresses specified ambient temperature changes and the effects of temperature changes on specimens.

MIL-STD-810 takes another approach. The U.S. Department of Defense states that MIL-STD-810 does not impose fixed design or test specifications; instead, it describes an environmental tailoring process intended to produce realistic test methods based on system performance requirements.

DO-160 is specifically focused on environmental conditions and test procedures for airborne equipment. RTCA identifies DO-160G as the current published version on its official page.

Therefore:

−40°C is a physical condition.

The standard determines why, how and under what conditions that −40°C exposure is performed.

This distinction is critical when purchasing test equipment.

IEC 60068 vs MIL-STD-810: Test Method vs Environmental Tailoring

The difference between IEC 60068 and MIL-STD-810 is especially important when engineers convert a standard into a chamber specification.

IEC 60068

IEC 60068 is a family of environmental test methods.

The engineer normally identifies the applicable test method and then determines the relevant:

• Test severity

• Specimen condition

• Exposure duration

• Temperature profile

• Humidity condition

• Test sequence

• Measurement requirements

• Recovery requirements

The IEC 60068 series is also actively maintained. For example, IEC published revised editions of IEC 60068-2-1 and IEC 60068-2-2 in 2025. IEC 60068-2-30:2025 also revised requirements relating to the test chamber, temperature tolerances and conditioning limits.

MIL-STD-810

MIL-STD-810 starts from a different engineering philosophy.

The official U.S. Department of Defense description emphasizes environmental engineering and tailoring throughout the materiel lifecycle. It specifically states that the standard does not impose fixed design or test specifications.

That means a procurement document saying only:

“MIL-STD-810 chamber required”

is not enough information for a technically reliable quotation.

The project should identify the applicable:

Method → Procedure → Environmental severity → Specimen condition → Duration → Measurement → Acceptance criteria

Practical distinction

IEC 60068 asks:

Which environmental test method applies?

MIL-STD-810 asks:

What environmental condition should be reproduced based on the intended lifecycle and system requirements?

That difference affects how the chamber should be specified.

UN Testing Is Not Simply Another Environmental Qualification Standard

UN testing is frequently grouped together with IEC, MIL-STD-810 and DO-160 because some test procedures involve temperature, vibration, shock or altitude.

However, its engineering context is different.

The UN Manual of Tests and Criteria is part of the dangerous-goods classification framework. The current UN publication is the Eighth Revised Edition, with Amendment 1 published in 2025. The 2025 amendment includes changes to subsection 38.3 addressing lithium cells and batteries and the definition of rupture.

This distinction matters for battery laboratories.

A battery test programme may require environmental conditioning, but the equipment specification may also need to address:

• Battery safety

• Electrical interfaces

• Remote operation

• Temperature monitoring

• Protection against abnormal events

• Exhaust or ventilation

• Emergency shutdown

• Data acquisition

• Test evidence

Therefore, the engineering question is not:

“Can this chamber reach the required temperature?”

It is:

“Can the complete test system safely reproduce the applicable test procedure and capture the required evidence?”

For battery laboratories, this can make the equipment architecture significantly different from a conventional electronics environmental chamber.

DO-160 Is Driven by the Airborne Equipment Environment

RTCA DO-160 is designed around environmental conditions and test procedures for airborne equipment. RTCA's SC-135 committee is responsible for maintaining standards for commercial avionics equipment under environmental and electromagnetic conditions.

For aerospace procurement, simply specifying:

“DO-160 chamber”

does not provide enough information.

The equipment supplier needs to understand the applicable:

• DO-160 section

• Category

• Temperature condition

• Altitude condition

• Pressure profile

• Humidity condition

• Vibration requirement

• Equipment operating state

• Test duration

• Monitoring requirements

• Acceptance criteria

DO-160 can involve environmental and related qualification conditions that extend beyond the capability of a conventional temperature-humidity chamber.

Therefore, aerospace laboratories should identify the exact test sections and categories before selecting equipment.

Why the Same Chamber Can Sometimes Support Multiple Standards

A common question from laboratories is:

Can one environmental test chamber be used for IEC 60068, MIL-STD-810 and DO-160 testing?

In many cases, a chamber can physically support multiple test programmes.

For example, a temperature-humidity chamber may be used for different qualification programmes when the required environmental envelope and performance characteristics overlap.

But there is an important distinction:

Multi-standard equipment capability does not mean automatic compliance with every standard.

The chamber must be evaluated against the actual requirements of each test programme.

Consider the following:

Chamber capability

• Temperature range

• Humidity range

• Temperature change rate

• Stability

• Uniformity

• Recovery

• Airflow

• Working volume

• Heat load capacity

Test-system capability

• Programmable profiles

• Data acquisition

• DUT monitoring

• Alarm functions

• Safety interlocks

• Pressure control

• Specialized fixtures

• Electrical feedthroughs

Qualification documentation

• Calibration

• Measurement traceability

• Test records

• Data export

• Test report requirements

A laboratory should therefore evaluate test capability, not just the label printed on the chamber.

One Environmental Stress, Four Different Qualification Logics

This is one of the most important concepts when comparing these standards.

Temperature

IEC 60068

Temperature is evaluated through a defined environmental test method, with requirements depending on the applicable method and specimen condition.

MIL-STD-810

Temperature conditions should be selected through environmental tailoring based on the intended service environment and system requirements.

UN Testing

Temperature exposure may form part of a prescribed test programme for applicable dangerous-goods or battery testing.

DO-160

Temperature is evaluated within the airborne equipment environmental qualification framework and according to the applicable section/category.

Therefore:

The physical variable is the same. The engineering purpose is different.

The same principle applies to vibration, shock, altitude and humidity.

How Engineers Should Choose the Applicable Standard

Instead of asking:

“Which standard is the best?”

start with the product and qualification objective.

Electronics and electrical equipment

If the primary objective is general environmental testing of electrical or electronic products, identify the applicable IEC 60068 test method and product specification.

Defense and ruggedized equipment

If the product must be evaluated against realistic environmental conditions throughout its intended service lifecycle, MIL-STD-810 may form part of the qualification programme, with environmental tailoring determining the applicable test approach.

Batteries and dangerous goods

If the requirement concerns dangerous-goods classification or applicable battery transport testing, identify the relevant UN Manual of Tests and Criteria requirements.

The current Rev.8/Amend.1 publication should be checked when the applicable requirement references the updated UN framework.

Airborne equipment

For avionics and airborne equipment, identify the applicable RTCA DO-160 section and category.

RTCA currently identifies DO-160G as the published version and maintains ongoing work through SC-135.

Standard Selection Should Start With a Test Requirement Matrix

For multi-standard laboratories, a test requirement matrix is often more useful than a simple list of standards.

How to Convert an Environmental Standard Into an RFQ

One of the most common procurement problems is sending a supplier only the standard number.

For example:

“Please quote a MIL-STD-810 environmental chamber.”

or:

“Please quote a DO-160 chamber.”

The supplier still does not know the complete technical requirement.

A stronger RFQ follows this structure:

Step 1 — Identify the standard

Example:

IEC 60068

Step 2 — Identify the exact test method

Example:

IEC 60068-2-14

Step 3 — Define severity

For example:

• Temperature limits

• Ramp rate

• Dwell time

• Number of cycles

Step 4 — Define the DUT

Provide:

• Width

• Depth

• Height

• Weight

• Material

• Heat dissipation

• Number of specimens

Step 5 — Define operating conditions

Specify whether the DUT is:

• Powered

• Unpowered

• Electrically monitored

• Mechanically operating

• Functionally tested during exposure

Step 6 — Define measurement

Identify:

• Chamber temperature

• DUT temperature

• Humidity

• Pressure

• Acceleration

• Voltage/current

• Other required channels

Step 7 — Define acceptance criteria

The supplier should understand what constitutes successful environmental exposure and what data must be retained.

The Difference Between Chamber Capability and Test Compliance

This distinction should appear in every serious environmental chamber procurement programme.

Chamber capability

A chamber may have:

• −70°C to +180°C

• 10–98% RH

• High temperature transition rate

• Programmable control

• Multiple sensor inputs

These are equipment characteristics.

Test compliance

Test compliance additionally depends on:

• Applicable standard revision

• Exact test method

• Test severity

• Specimen configuration

• Test sequence

• Measurement method

• Tolerances

• Recovery

• Acceptance criteria

• Test documentation

Therefore:

A chamber's environmental range is not the same thing as qualification to a test standard.

This is especially important when comparing quotations from different suppliers.

What Procurement Teams Should Compare Between Chamber Suppliers

When evaluating quotations, do not compare only:

Temperature Range + Chamber Volume + Price

A more useful technical comparison includes:

Environmental performance

• Temperature range

• Humidity range

• Temperature transition rate

• Stability

• Uniformity

• Recovery time

• Loaded performance

Specimen capability

• Working volume

• Maximum specimen dimensions

• Maximum specimen mass

• Heat dissipation

• Fixture compatibility

• Electrical feedthroughs

Control and data

• Programmable test profiles

• Recipe management

• Data acquisition

• DUT monitoring

• Alarm history

• Data export

• Remote monitoring

Quality and verification

• Calibration

• Sensor accuracy

• Traceability

• Factory acceptance testing

• Site acceptance testing

• Performance verification

Safety

For battery or hazardous-material applications, also evaluate:

• Safety containment

• Emergency shutdown

• Over-temperature protection

• Electrical protection

• Exhaust or ventilation

• Gas monitoring where applicable

• Fire-event protection strategy

This comparison produces a much more meaningful procurement decision than headline specifications alone.

Can One Laboratory Use IEC, MIL-STD-810, UN and DO-160?

Yes. A laboratory may support multiple qualification programmes.

However, the laboratory should avoid treating all four frameworks as one generic environmental testing category.

A multi-standard laboratory should instead build its capability around:

Test Method Library

↓

Environmental Profiles

↓

Equipment Capability

↓

Instrumentation

↓

Calibration

↓

Safety

↓

Data Acquisition

↓

Reporting

This approach allows one environmental test system to potentially support multiple customer programmes while maintaining a clear relationship between each test and its applicable requirement.

What Engineers Should Send to a Test Chamber Manufacturer

Before requesting a technical quotation, prepare the following information.

Standard information

• Standard name

• Revision

• Test method or section

• Procedure/category where applicable

Environmental requirements

• Temperature range

• Humidity range

• Pressure/altitude

• Temperature transition rate

• Dwell time

• Cycle count

DUT information

• Dimensions

• Weight

• Heat dissipation

• Quantity

• Fixture

• Powered/unpowered condition

Test information

• Test duration

• Test sequence

• Monitoring requirements

• Acceptance criteria

• Data recording requirements

Laboratory requirements

• Available power

• Water supply

• Exhaust

• Cooling requirements

• Floor loading

• Installation environment

• Calibration requirements

The more complete this information is, the less likely the supplier is to make assumptions during quotation.

A Practical Decision Tree for Engineers

Use this sequence when starting a new environmental qualification project:

Question 1: What product is being tested?

Electronics?

Battery?

Automotive component?

Military equipment?

Avionics?

Space hardware?

Question 2: What is the qualification objective?

Environmental durability?

Transportation?

Operational qualification?

Dangerous-goods classification?

Aerospace qualification?

Reliability acceleration?

Question 3: Which standard or customer specification applies?

IEC 60068?

MIL-STD-810?

UN Manual of Tests and Criteria?

RTCA DO-160?

Another industry-specific standard?

Question 4: What is the exact test method?

Do not stop at the standard name.

Identify the exact:

Method / Section / Procedure / Category

Question 5: What environmental profile is required?

Define:

Temperature + Humidity + Pressure + Ramp + Dwell + Cycles + Duration

Question 6: What does the DUT require?

Define:

Size + Mass + Heat Load + Operating State + Monitoring

Question 7: What must the chamber actually do?

Only now should the equipment specification be finalized.

How TestEQ Supports Multi-Standard Environmental Testing

TestEQ approaches environmental test equipment from the test requirement to the system configuration, rather than treating a standard name as a complete chamber specification.

Depending on the application, TestEQ can engineer environmental test systems around requirements associated with:

• IEC 60068

• MIL-STD-810

• UN battery testing

• RTCA DO-160

• JEDEC reliability testing

• AEC automotive qualification

• Customer-specific environmental qualification programmes

The engineering process can begin with the customer's:

Standard → Test Method → Test Profile → DUT → Measurement → Acceptance Criteria

and then translate those requirements into:

Chamber → Control System → Instrumentation → Safety → Data Acquisition → Verification

This approach is particularly useful for laboratories and manufacturers that need one test platform to support multiple qualification programmes.

From Standard to Test Chamber: A Practical Engineering Workflow

For a new qualification project, the recommended workflow is:

1. Identify the product

2. Define the qualification objective

3. Identify the applicable standard

4. Identify the exact method / section / procedure / category

5. Define environmental severity

6. Define DUT dimensions, mass and heat load

7. Define operating and monitoring conditions

8. Convert the requirements into a chamber URS

9. Compare supplier specifications under loaded conditions

10. Confirm calibration, verification, safety and data requirements

This workflow reduces the risk of purchasing equipment that meets a headline specification but cannot reproduce the actual qualification profile.

Frequently Asked Questions

1.Is IEC 60068 the same as MIL-STD-810?

No. IEC 60068 is a family of environmental test methods, while MIL-STD-810 provides environmental engineering guidance and a tailoring process for developing realistic test methods based on system requirements.

2.Is MIL-STD-810 a fixed set of environmental test conditions?

No. The U.S. Department of Defense states that MIL-STD-810 does not impose fixed design or test specifications. It describes an environmental tailoring process based on materiel system performance requirements.

3.Is UN testing equivalent to IEC 60068?

No. The UN Manual of Tests and Criteria serves a different regulatory and classification context. Its current Rev.8/Amend.1 includes provisions affecting lithium cells and batteries.

4.Is DO-160 an aerospace environmental testing standard?

DO-160 provides environmental conditions and test procedures for airborne equipment. RTCA identifies DO-160G as the published version on its current official page.

5.Can one environmental chamber support multiple standards?

Potentially yes. The chamber can support multiple programmes when its actual environmental performance, control, specimen loading, instrumentation and safety configuration meet the requirements of the applicable test procedures.

6.Does a chamber automatically comply with a standard?

No. Chamber capability and test compliance are different. Compliance depends on the complete test method, specimen configuration, environmental profile, measurement system, tolerances, sequence and documentation.

7.What should be included in an environmental chamber RFQ?

At minimum, specify the standard revision, exact test method or section, severity, temperature/humidity/pressure profile, specimen dimensions and mass, heat load, operating condition, test duration, monitoring requirements and acceptance criteria.

8.Can a DO-160 chamber also be used for MIL-STD-810 testing?

Potentially, where the environmental requirements overlap. The applicable DO-160 section/category and MIL-STD-810 method/procedure must be compared before determining whether the same configuration is suitable.

9.Can a battery chamber be used for general IEC environmental testing?

Potentially, depending on the chamber's environmental performance and safety configuration. Battery applications may require additional safety, monitoring and containment provisions that are not necessary for conventional electronics testing.

Internal Linking Module

Environmental Testing Standards

• IEC 60068 Environmental Testing Standard

Learn how IEC 60068 environmental test methods are applied to electrical and electronic products and how test conditions translate into laboratory requirements.

• MIL-STD-810 Environmental Testing Standard

Understand the environmental tailoring approach of MIL-STD-810 and how engineers define realistic laboratory test conditions for equipment.

• RTCA DO-160 Environmental Testing Standard

Explore environmental qualification requirements for airborne equipment, including temperature, altitude, humidity and other applicable conditions.

Battery & Specialized Testing Standards

• UN 38.3 Lithium Battery Testing Standard

Review the environmental and safety-related testing framework applicable to lithium cells and batteries under UN transport requirements.

• JEDEC Reliability Testing Standards

Explore semiconductor reliability test standards and the environmental conditions commonly used for electronic component qualification.

• AEC-Q100 Automotive Reliability Testing

Understand automotive electronic component qualification requirements and the environmental testing methods used for reliability evaluation.

Environmental Test Equipment

• Environmental Test Chamber

Explore temperature and environmental simulation systems for electronics, automotive, aerospace and industrial qualification testing.

• Temperature & Humidity Test Chamber

Learn how controlled temperature and humidity conditions are used for environmental durability and reliability testing.

• Rapid Temperature Change Test Chamber

Explore high-speed temperature transition systems for thermal cycling, semiconductor reliability and accelerated environmental testing.

Engineering Guides & Test Resources

• Thermal Cycling Testing Guide

Learn how temperature cycling creates repeated thermal stress and how engineers define appropriate test profiles and chamber requirements.

• Altitude Simulation Testing Guide

Understand low-pressure and altitude simulation requirements and the equipment parameters that matter when specifying an altitude test system.

• Thermal Vacuum Testing Guide

Explore thermal vacuum testing for aerospace and space hardware, including vacuum level, temperature control and test-system configuration.

Request a Technical Review From TestEQ

Choosing an environmental test chamber should begin with the test requirement, not simply the name of a standard.

IEC 60068, MIL-STD-810, UN testing and RTCA DO-160 can involve similar environmental stresses, but they serve different engineering and qualification purposes.

For a quotation, send TestEQ:

• Applicable standard

• Standard revision

• Test method or section

• Test severity

• Temperature range

• Humidity or pressure requirement

• Temperature transition rate

• Specimen dimensions

• Specimen mass

• Heat dissipation

• Operating condition

• Test duration

• Cycle count

• Monitoring requirements

• Acceptance criteria

TestEQ can then review the requirements and help translate the test programme into an appropriate environmental test system configuration.

Need an environmental test chamber for IEC 60068, MIL-STD-810, UN battery testing or RTCA DO-160?

Send your test standard and test profile to TestEQ for an engineering review and technical quotation.

"Request a Technical Consultation →"