SALT FOG TEST CHAMBERS
Repeatable, traceable corrosion exposure for standards-driven laboratories
Whether you’re validating coatings, fasteners, or finished components, Auto Technology Salt Fog & Humidity Chambers deliver repeatable, traceable, and certifiable corrosion test conditions. These are the same chambers used daily in our own A2LA-accredited corrosion testing laboratory, ensuring real-world credibility—not just brochure claims.
Engineered for accuracy and long-term repeatability, Auto Technology salt fog and humidity chambers provide dependable performance for ASTM B117, ISO 9227, MIL-STD-810, and many other international and OEM corrosion standards. Designed for continuous operation and precise environmental control, our chambers reproduce salt spray and humidity exposure conditions with exceptional consistency.
Built in the USA and trusted by laboratories worldwide, Auto Technology chambers deliver the reliability, uniformity, and data continuity demanded by standards-driven test programs.
Supported Standards
Supported standards include (but are not limited to):
- ASTM B117
- ASTM G85 (A1, A2, A3, A4, A5†)
- ISO 9227 (NSS, AASS, CASS)
- ISO 6270-3
- ISO 7253
- ISO 9022-4
- IEC 60068-2-11
- MIL-STD-810, Method 509.7
- MIL-STD-202, Method 101
- MIL-STD-883, Method 1009
- MIL-STD-750, Method 1046.3
- JIS 2371 (NSS, AASS, CASS)
- JIS 8502 (8.2, 8.3, 8.4, 8.7, 8.11)
- GB/T 10125 (NSS, AASS, CASS)
- DIN 50018
- EIA-364-31
- EN 13523-8
- BMW AA-0213
- Jaguar TPJLR.52.252 / TPJLR.52.253
- Toyota TSH1552G
- Nissan MES-M0007 5.22
- VW 80000 K-06 / K-07
- and more
† Note: ASTM G85 Annex A5 is supported on Auto Technology C Series fiberglass salt fog chambers.
M Series steel salt fog chambers (example configuration).
M Series Steel Salt Fog Chambers
The Industry Benchmark for Data Continuity
The M Series steel salt fog chamber has been the cornerstone of corrosion testing for more than 75 years.
Despite advances in materials and control technologies, professional laboratories around the world continue to rely on coated steel salt fog chambers because data continuity matters. These are the chambers labs have used for decades—often across multiple product generations, coating systems, and qualification programs. When consistency, drift control, and historical comparability are critical, the M Series remains the trusted standard.
In addition to unmatched continuity, the M Series leverages water-jacketed construction to deliver exceptional temperature stability across long test durations—reducing gradients, minimizing drift, and supporting tighter control requirements.
The M Series also includes a 55-gallon external salt solution tank with integrated mixing capability, providing a stable, well-homogenized supply of test solution for extended test durations. This configuration supports consistent solution concentration, minimizes operator intervention during long exposures, and aligns with laboratories that prioritize repeatability, documentation consistency, and uninterrupted operation.
Command Controls (Standard)
The M Series is equipped with Command Controls, a hardware-based control system that provides precise temperature regulation and power control through dedicated physical knobs and switches. In ISO-, FDA-, and quality-system-regulated laboratories, this design minimizes unintended setpoint changes, reduces operator ambiguity, and supports repeatable operation across shifts and test programs.
By avoiding software-dependent interfaces for core environmental controls, Command Controls deliver deterministic behavior, immediate feedback, and consistent performance during long-duration corrosion exposures—supporting stable test conditions, simplified operator training, and long-term reproducibility.
Exposure-zone RTDs and ports for specimen-plane measurement and traceable sampling.
Temperature Measurement (RTDs – Standard)
The M Series utilizes RTD (Resistance Temperature Detector) sensors positioned directly within the exposure zone to measure actual specimen-level conditions. By sensing temperature where exposure occurs—rather than relying solely on jacket or supply air temperatures—the M Series supports highly repeatable control and defensible temperature measurement during long-duration corrosion testing.
RTDs are selected for their long-term stability and predictable response, aligning with laboratories that prioritize data continuity, traceability, and reproducibility across multi-year qualification programs and regulated test environments.
M Series Customization & Upgrade Options
Over time, Auto Technology has developed a comprehensive suite of options that expand the capabilities of the M Series while preserving its inherent stability, repeatability, and reliability.
High-Temperature & Advanced Test Capability
High-Temperature Package
Supports elevated-temperature tests including ASTM B368, ASTM G85 A2 / A3, ISO 9227 CASS, JIS 2371 CASS, JIS 8502 8.4, and GB/T 10125 CASS.
Cyclic / Touchscreen Controls
Automated workflows including fog, purge, humidity, and SO₂ dosing at the push of a button.
Central Fog Towers
Consistent fog generation and distribution for repeatable exposure conditions (example shown).
Horizontal Dispersion Towers
Improved flexibility for larger or irregular test specimens while maintaining exposure uniformity.
External Condensate Collection Package
Collect solution samples without opening the chamber.
Ambient Temperature Control
Automatic Air Lifters – Enable return to true ambient conditions by automatically lifting the chamber lid to introduce controlled ambient air during defined portions of the test cycle. This supports test methods that specify ambient dwell or natural recovery periods while maintaining repeatability and operator safety.
Gas & Cyclic Testing Capabilities
SO₂ Testing Package – Metered SO₂ dosing for standards such as ASTM G85 A4, DIN 50018, JIS H 8502 10.1, and JIS 8502 8.7.
Chamber Configuration & Handling
- Low-Profile Configuration – Reduced overall height for easier specimen loading and ergonomic access
- High-Profile Configuration – Increased internal clearance for larger specimen geometries and fixtures
- Standalone Data Logger – Independent recording of chamber conditions
- Shutdown Timer – Automatically shuts off pressurized and humidified air for unattended operation
Utilities & Infrastructure Options
- Bubble Tower DI Holding Tank – Provides a local DI water source for laboratories without direct DI supply
- Jet Exhaust Scrubber – Allows venting to a floor drain instead of overhead exhaust
- Jet Exhaust Recirculating Scrubber – Reduces water consumption dramatically while maintaining safe exhaust handling
- 55-Gallon External Salt Solution Tank + Mixing – Stable, homogenized solution supply for extended programs
C Series fiberglass salt fog chambers.
C Series Fiberglass Salt Fog Chambers
Simple, Cost-Effective Corrosion Testing
If long-term data continuity is not the primary driver—and price, simplicity, and ease of use are—the C Series may be the right solution.
The C Series is a fiberglass salt fog chamber designed to modernize basic salt spray testing for cost-conscious laboratories. It provides a straightforward interface and reliable operation for ASTM B117 and a range of modified salt fog tests, making it an ideal entry-level corrosion chamber for qualification, comparison testing, or routine exposure work.
The C Series delivers dependable salt fog performance without the complexity or investment of a fully configurable steel system—while still being backed by Auto Technology’s manufacturing experience and service support.