2026-09-21 · KeXinMaterials Editorial Team
MIL-STD-810G vs IP67 vs IP68 vs ATA 300: Protective Case Certifications Explained (2026)
Six certifications dominate the protective case spec sheet: MIL-STD-810G drop, IP67/IP68 ingress, ATA 300 airline-checkable, plus CE / RoHS / REACH for EU. Here is what each one actually tests, when it matters, and the procurement traps.
Why Certifications Are Not Interchangeable
Every certification answers a specific question about case performance. Conflating them is the most common B2B procurement error.
IP67 answers: will the case keep contents dry in a temporary water immersion? IP68 answers: will the case survive continuous water immersion for 30+ minutes at 1-3 metres depth? MIL-STD-810G answers: will the case survive being dropped, vibrated, and temperature-shocked in field conditions? ATA 300 answers: will the case survive 100 airline baggage handling cycles?
These are different questions. A case can pass IP67 (waterproof) but fail MIL-STD-810G (cracks on drop). A case can pass MIL-STD-810G but fail IP68 (water seeps in under continuous immersion). The buyer must verify the certification that matches the actual use case.
Beware of vague marketing claims. A factory may say "MIL-STD-810G certified" without specifying which lot was tested, what drop height, what temperature range. The only way to verify is to request the lot-specific batch test certificate.
IP67 vs IP68: Ingress Protection Explained
IP ratings are defined by IEC 60529. The two-digit code after "IP" indicates dust and water resistance. Most protective cases meet IP67 or IP68.
IP67: Protected against temporary immersion in 1 metre of water for 30 minutes. The case must be dust-tight (first digit 6 = dustproof). This covers most B2B field use — outdoor survey, marine deck, helicopter cargo hold, factory floor.
IP68: Protected against continuous immersion in water at 1-3 metres depth for 30+ minutes. Depth and duration specified by the manufacturer. Required for subsea deployment — ROV operations, marine research, diving equipment.
IP rating cost differential: IP67 SKUs are baseline. IP68 SKUs are 10-25% more expensive due to additional sealing and pressure testing. For B2B buyers, IP67 covers 90% of use cases; IP68 is needed only for specific underwater or sustained-pressure applications.
Common procurement trap: "IP-rated" without specifying IP67 or IP68. Always confirm exact rating + batch test certificate.
| IP Rating | Dust | Water Exposure | Typical Use Case | Cost Premium vs IP54 |
|---|---|---|---|---|
| IP54 | Dust-protected (not sealed) | Splashing water | Indoor / light outdoor | Baseline |
| IP65 | Dust-tight | Low-pressure water jets | Outdoor / hose-down | +5-10% |
| IP67 | Dust-tight | Immersion 1m / 30 min | Marine / field work | +10-15% |
| IP68 | Dust-tight | Continuous immersion 1-3m / 30+ min | Subsea / ROV | +25-40% |
MIL-STD-810G: The Drop and Vibration Standard
MIL-STD-810G is a US Department of Defense test methodology covering environmental engineering. For protective cases, the relevant sections are drop, vibration, temperature, and humidity.
MIL-STD-810G Method 516.6 — Shock: drop test. The case must survive 26 drops (one per face, edge, corner) from 1.22 metres (48 inches) onto 50mm plywood over concrete. Functional test: contents must remain operational after the drop sequence.
MIL-STD-810G Method 514.6 — Vibration: random vibration simulating transport by truck, aircraft, ship. The case must survive 1 hour per axis at the relevant vibration profile.
MIL-STD-810G Method 501.5 / 502.5 — Temperature: high-temp (49°C for 4 hours) and low-temp (-32°C for 4 hours). Functional test: latches must operate, seals must remain intact.
MIL-STD-810G Method 507.5 — Humidity: 5-day humidity cycle at 95% RH. Functional test: no corrosion, latches remain operational.
For B2B buyers, MIL-STD-810G is the differentiator for defence, aerospace, and outdoor field use. The certificate must specify which methods were tested and the lot number of the tested cases.
ATA 300 Category I: Airline-Checkable Luggage
ATA Specification 300 defines airline-checkable luggage. Category I is the most stringent — the case must survive 100 round trips of airline baggage handling.
ATA 300 Category I tests 100 cycles of: drop, vibration, humidity, and pressure changes simulating aircraft cargo hold. After 100 cycles, the case must still operate (latches, hinges, seals functional).
For B2B buyers in broadcast, photography, surveying, and field service — teams that fly weekly with gear — ATA 300 is the relevant certification. Without it, the case may survive 5-10 trips but fail at trip 30.
ATA 300 is independent of IP rating. A case can be ATA 300 Category I without being IP67. Conversely, IP67 does not imply ATA 300 (the case could be airtight but crack on impact).
For our factory, ATA 300 Category I certification is standard for all trolley-case SKUs. Inspection camera / broadcast SKUs are batch-certified. Confirm at sample stage.
CE / RoHS / REACH: EU Compliance Trio
For B2B buyers exporting to the EU market, three compliance certifications are mandatory or near-mandatory. Each addresses a different regulatory concern.
CE marking: The product complies with EU safety, health, and environmental requirements. Mandatory for protective cases sold in the EU. Self-declared by the manufacturer for most protective case categories; covers low-voltage directive, EMC directive, and PPE directive (where applicable).
RoHS (Restriction of Hazardous Substances): EU Directive 2011/65/EU restricts lead, mercury, cadmium, hexavalent chromium, PBB, PBDE in electrical and electronic equipment. Plastic cases with metal hardware require RoHS declaration.
REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals): EU regulation covering chemicals used in manufacturing. Plastic cases must declare SVHC (Substances of Very High Concern) below 0.1% w/w threshold.
For B2B buyers, CE / RoHS / REACH are table stakes for EU market access. Verify at sample stage with copy of declaration of conformity. Per-SKU test reports available on request.
Other Certifications Worth Knowing
Beyond IP / MIL-STD / ATA / CE, three certifications appear frequently on spec documents for B2B procurement.
- FDA compatibility statement: For medical SKUs (defibrillators, AED, pharma transport). Declares the case materials do not interact adversely with the contents. Per-SKU statement available.
- NSN registration support: For defence SKUs. NSN (National Stock Number) assigned by the buyer's defence procurement agency. The factory provides technical data package (TDP) to support buyer's NSN application.
- ATA 300 Category II: Less stringent than Category I — 50 cycles of drop / vibration. For air-freight-not-checkable cases.
- California Prop 65: For US market. Restricts chemicals known to cause cancer / reproductive harm. Most factory-direct cases pass with material declaration.
- UN 38.3: For cases containing or shipping lithium batteries. Mandatory for air freight.
- ISTA 3A: For transport packaging testing. Independent of MIL-STD but sometimes substituted by procurement.
How to Verify a Certification Claim
Marketing claims often exceed reality. The four-step verification protects B2B procurement from non-compliant supply.
- Step 1: Request the certificate. Ask for the lot-specific test certificate. Generic factory-wide certificates are weaker than per-shipment-lot certificates.
- Step 2: Check the issuing body. ISO 17025-accredited labs are the most reliable. In-house factory lab testing is acceptable for IP / drop but third-party for defence / aerospace.
- Step 3: Verify test parameters. MIL-STD-810G drop test must specify drop height (typically 1.22m / 48 inches) and number of drops (26). IP67 must specify 1m / 30 min immersion.
- Step 4: Cross-check the lot number. The certificate lot number must match the lot number physically shipped to you. Mismatch = certificate applies to a different shipment.
Why Choose KeXinMaterials for Certified Cases
KeXinMaterials holds ISO 9001:2015, CE / RoHS / REACH for EU export, FDA compatibility statements for medical lines, NSN registration support for defence lines.
All IP67 / IP68 / MIL-STD-810G / ATA 300 certifications are batch-tested per shipment lot. Test certificate supplied with every B2B order. Third-party lab reports available for defence and aerospace procurement.
We support ATA 300 Category I across our trolley-case and inspection camera case SKU range. MIL-STD-810G drop + vibration + temperature + humidity test reports provided per lot for defence / outdoor SKUs.
Trade terms: EXW Shenzhen / FOB Shenzhen / FOB Ningbo. No DDP, no EU warehouse, no US warehouse. Every shipment is direct from our 13,000 m² Guangdong factory floor to your nominated forwarder.
Key Takeaways
- IP67 (1m/30min immersion) covers 90% of B2B use; IP68 (continuous 1-3m/30+min) for subsea only
- MIL-STD-810G drop / vibration / temperature / humidity — different tests, different use cases
- ATA 300 Category I = 100 airline baggage cycles; standard for trolley / broadcast SKUs
- CE / RoHS / REACH mandatory for EU export; FDA / NSN for medical / defence US procurement
- Always request lot-specific batch test certificate, not factory-wide marketing claim
FAQ
What is the difference between IP67 and IP68?
IP67 means the case is dust-tight and withstands temporary immersion in 1 metre of water for 30 minutes. IP68 means the case is dust-tight and withstands continuous immersion at 1-3 metres depth for 30+ minutes (depth specified by the manufacturer). For most B2B applications (outdoor field work, marine deck, transport), IP67 is sufficient. IP68 is needed only for underwater deployment (ROV operations, marine research, diving equipment). IP68 SKUs cost 10-25% more than IP67 equivalents.
What does MIL-STD-810G actually test?
MIL-STD-810G is a US Department of Defense test methodology. For protective cases, the four most relevant test methods are: Method 516.6 Shock (26 drops from 1.22 metres onto plywood over concrete); Method 514.6 Vibration (1 hour per axis at transport vibration profile); Method 501.5/502.5 Temperature (49°C high-temp, -32°C low-temp for 4 hours each); Method 507.5 Humidity (5-day humidity cycle at 95% RH). After each test, latches and seals must remain functional.
What is ATA 300 Category I?
ATA Specification 300 Category I is the airline-checkable luggage standard. The case must survive 100 round trips of airline baggage handling (drop, vibration, humidity, pressure changes). After 100 cycles, the case must remain operational (latches, hinges, seals). ATA 300 Category I is the relevant certification for broadcast, photography, surveying, and field service teams that fly weekly with gear. Without ATA 300, the case may survive 5-10 trips but fail at trip 30.
Do I need CE / RoHS / REACH for EU export?
Yes. CE marking is mandatory for protective cases sold in the EU. RoHS (EU Directive 2011/65/EU) restricts hazardous substances in the plastic and metal hardware. REACH (EU regulation) declares SVHC chemicals below 0.1% w/w. Verify at sample stage with copy of declaration of conformity. Per-SKU test reports available on request. KeXinMaterials supplies CE / RoHS / REACH declaration with every EU shipment.
How do I verify a certification claim from a factory?
Four-step verification: (1) Request the lot-specific test certificate. Generic factory-wide certificates are weaker than per-shipment-lot certificates. (2) Check the issuing body — ISO 17025-accredited labs are most reliable. (3) Verify test parameters — MIL-STD-810G drop must specify height (1.22m / 48 inches) and number of drops (26). IP67 must specify 1m / 30 min. (4) Cross-check the lot number on the certificate matches the lot physically shipped to you.
What about FDA and NSN certifications?
FDA compatibility statement is for medical SKUs (defibrillators, AED, pharma transport). Declares the case materials do not interact adversely with the contents. Per-SKU statement available. NSN (National Stock Number) registration support is for defence SKUs. The factory provides technical data package (TDP) to support the buyer's NSN application. KeXinMaterials supports both for medical and defence B2B procurement.