G4 MULTI-GAS & SO₂ TEST CHAMBERS
Precision atmospheric dosing for sulfur dioxide (SO₂) and multi-gas environments. Engineered for high-accuracy corrosion testing in moist, gas-rich atmospheres.
Quad-Gas Capability
Support for up to 4 gas inputs for complex multi-gas dosing and pollutant simulation.
Moist SO₂ Specialization
Purpose-built for DIN 50018 and ASTM G87 workflows.
Benchtop Precision
High-fidelity dosing and repeatability in a space-efficient laboratory footprint.
Compliance & Standards
Moist-gas corrosion performance is driven by the interaction of gas dose + humidity + temperature + time. The G4 is designed to maintain a stable, saturated environment while dosing up to four gases with controlled pressure and flow.
- DIN 50018: Damp heat alternating atmosphere containing SO₂ (SFW 0.2S, SFW 2.0S).
- ASTM G87: Standard Practice for Conducting Moist SO₂ Tests.
- DIN 50017: Damp heat constant and alternating atmospheres (SFW, STW, SK).
- UL 294 / UL 217: Life-safety and security component corrosion workflows.
- MIL-STD-810H: Acidic Atmosphere Method 518.2.
- IEC 60068-2-60: Flowing Mixed Gas (supports multi-gas workflows).
Engineering Highlights
Precision Multi-Gas Dosing
Quad-input system: Supports up to 4 distinct gas sources for custom-mixed pollutant atmospheres.
Controlled flow dynamics: Integrated flow control supports consistent dosing into the 300 L volume for repeatable exposure conditions.
Atmospheric Moisture Control
Moist environment design: Built for saturated conditions required for moist-gas corrosion mechanisms.
Condensation management: The angled roof design helps prevent acidic condensate drip onto specimens—reducing “acid rain” artifacts.
Material Integrity: Non-porous, washable PVC lining plus heavy-gauge steel construction withstand aggressive acidic atmospheres.
Performance Priorities
- Repeatability across lots and labs
- Stable dosing and controlled moisture behavior
- Reduced contamination risk between runs
- Observation without interrupting cycles
Technical Specifications
| Feature | Specification |
|---|---|
| Gas Inputs | Up to 4 distinct gas ports |
| Max Gas Pressure | 10 p.s.i. |
| Internal Volume | 300 Liters (10 cu. ft.) |
| Cycle Automation | Preset flow rate, time, and temperature |
| Observation | Dual shatterproof Plexiglas viewing ports with gasketed seals |
Applications & Technical Workflows
Choose the G4 when you need a dedicated moist-gas platform with multi-gas flexibility—especially where documentation and repeatability matter.
UL Workflows (Life Safety & Security)
Controlled pollutant exposures for corrosion resilience studies. Observation ports support monitoring without stopping the cycle.
Electronics & Connector Reliability
Mixed industrial gases to evaluate corrosion buildup impacts on contacts, housings, and electrical resistance behavior.
Comprehensive Standards & Specifications Matrix
- DIN 50018: SO₂ corrosion testing (SFW 0.2S, SFW 2.0S)
- ASTM G87: Moist SO₂
- ISO 6988 / ISO 22479: SO₂ + moisture condensation
- ISO 3231: Humid atmospheres containing SO₂
- UL 217 / UL 268: Smoke alarms / fire detectors
- UL 294: Access control system units
- IEC 60068-2-42: SO₂ (contacts/connections)
- IEC 60068-2-43: H₂S (contacts/connections)
- IEC 60068-2-60: Flowing mixed gas
- MIL-STD-810H: Method 518.2 (Acidic Atmosphere)
- ISO 16750-4: Road vehicle electronics (chemical loads)
Not Ready to Purchase a G4? We Also Run Moist-Gas & SO₂ Contract Testing
A lot of teams start by outsourcing moist-gas testing before committing to in-house equipment. Auto Technology Company operates a large A2LA-accredited corrosion testing laboratory and can run moist SO₂ and multi-gas exposure programs to help you qualify components, replicate failures, or prove performance before capital purchase.
When Contract Testing Makes Sense
- Qualification testing for new materials, coatings, or assemblies
- Failure analysis and field-return replication
- Limited annual test volume or temporary surge demand
- Method development, correlation, or troubleshooting
- Third-party verification before production release
Lab Capabilities
- DIN 50018 (Kesternich) workflows
- ASTM G87 moist SO₂ testing
- Multi-gas dosing (method/program dependent)
- Fixture support for components and assemblies
- Documentation and repeatable process control
Fast path to data: If you’re still defining your exposure profile, we can help you translate your standard or field environment into a controlled moist-gas test plan.
Tell us the standard (DIN 50018 / ASTM G87), gas(s), duration, and sample size — we’ll scope a test plan.
Frequently Asked Questions
How does the G4 manage the gas-to-moisture conditions required for DIN 50018 (Kesternich)?
The chamber is designed for saturated (moist) environments and uses controlled dosing into the 300 L volume, paired with time/temperature cycle control to support repeatable exposure conditions.
Why is the interior lined with PVC instead of stainless steel?
Moist SO₂ generates aggressive acidic condensate that can pit many stainless steels over time. A non-porous, washable PVC lining is selected for chemical resistance and cleanability to extend service life and reduce cross-test contamination risk.
Can this chamber be used for MIL-STD-810H “Acidic Atmosphere” testing?
Yes—its purpose-built moist-gas architecture makes it well suited for acidic atmosphere simulation workflows consistent with MIL-STD-810H Method 518.2 intent.
How are gas exhaust and operator safety handled?
The G4 is intended for lab integration where toxic gases are managed through appropriate ventilation and facility procedures. Always follow your safety program and applicable standards for gas handling, purge, and exhaust routing.