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Front view of Auto Technology M Series Size 15 salt fog test chamber with clear lid and enclosed exposure zone.
Side view of Auto Technology M Series Size 15 salt fog chamber showing control panel and solution delivery components.
Auto Technology M Series Size 15 salt fog test chamber operating with visible salt fog inside the exposure zone.
Interior of Auto Technology M Series Size 15 salt fog test chamber showing internal baffle and active salt fog.
Auto Technology M Series Size 15 salt fog test chamber showing vent-side cabinet and exhaust connection.

ASTM B117 Salt Spray Chamber – M Series Size 12

The Auto Technology M Series Size 12 is a compact, water-jacketed ASTM B117 salt spray chamber providing approximately 12 ft³ (339 L) of usable test volume. Designed and manufactured in Ohio, it combines indirect water-jacket heating, conditioned atomizing air, engineered fog distribution, and durable M Series construction for continuous neutral salt fog exposure.

  • Test Method: ASTM B117 continuous salt spray (fog)
  • Exposure Zone: 35°C ±2°C
  • Test Solution: 5% ±1% sodium chloride by mass
  • Fog Collection: 1.0-2.0 mL/h per 80 cm², averaged over at least 16 hours
  • Heating System: Indirect water jacket for stable chamber temperature
  • Fog System: Conditioned compressed air, bubble-tower humidification, atomization, and engineered fog distribution
  • Control System: M Series Command Controls; digital controls and data logging available as options
  • Solution System: External mixing and automatic-fill tank

ASTM B117 defines the apparatus and exposure conditions. The governing product or material specification establishes test duration, specimen preparation, evaluation, and acceptance criteria.

SKU: C100015-A/12 Categories: , Tag:

Description

The M Series Size 12 ASTM B117 Salt Spray Chamber is a compact, water-jacketed corrosion chamber with approximately 12 ft³ (339 L) of usable test volume. It is designed specifically for laboratories that need continuous neutral salt fog exposure in a smaller chamber while retaining the thermal stability, conditioned fog generation, and long-term durability of the M Series platform.

Auto Technology M Series water-jacketed ASTM B117 salt spray chamber
Auto Technology M Series water-jacketed salt spray chamber platform.

ASTM B117 Focus
Configured around the continuous 35°C neutral salt fog environment and operating controls required by ASTM B117.

Water-Jacket Stability
Indirect water-jacket heating moderates temperature changes and supports stable conditions throughout long exposures.

Compact 12 ft³ Capacity
Laboratory-scale test volume for panels, coupons, connectors, fasteners, plated components, and smaller production parts.

Request a Size 12 ASTM B117 Chamber Quote

Provide specimen dimensions, loading quantity, required exposure duration, evaluation requirements, and available facility utilities.

ASTM B117 Salt Spray Exposure Profile

ASTM B117 is a continuous salt spray practice. The chamber remains closed with fog operating throughout the exposure except for the brief interruptions needed to inspect or rearrange specimens, service the solution reservoir, and record operating measurements.

Exposure sequence Continuous neutral salt fog
Exposure-zone temperature 35°C ±2°C
Salt solution 5 ±1 parts sodium chloride by mass in 95 parts water
Collected-solution pH 6.5-7.2, measured at 23°C ±3°C
Fog collection 1.0-2.0 mL/h per 80 cm² of horizontal collection area, averaged over at least 16 hours
Specimen orientation Unless otherwise specified, 15°-30° from vertical and positioned to avoid direct spray impingement and dripping between specimens

ASTM B117 does not assign a universal test duration: The product or material specification, or agreement between purchaser and seller, establishes the exposure period. Multiples of 24 hours are suggested.

M Series Water-Jacket Temperature Control

The M Series uses indirect water-jacket heating rather than exposing specimens to concentrated radiant heat from an element in the test space. The surrounding water mass distributes heat around the chamber and moderates short-term temperature changes during continuous exposure.

This established M Series architecture is well suited to multi-day and multi-week ASTM B117 programs that depend on stable chamber temperature and repeatable fog collection throughout the specimen area.

Conditioned ASTM B117 Fog Generation

Clean compressed air passes through the heated bubble tower to increase its moisture content before it reaches the atomizer. The chamber disperses the resulting aerosol through the exposure zone without directing the spray nozzle at the specimens.

Bubble-Tower Conditioning
Humidifies and warms the compressed air used for atomization.

Engineered Fog Distribution
Supports freely settling fog and collection-rate checks across the exposure zone.

Automatic Solution Supply
The external mixing and automatic-fill tank maintains solution availability during extended tests.

ASTM B117 Operating Checks

B117 compliance is established through chamber operation and laboratory measurements, not by selecting a method name on a controller. The operator records the exposure-zone temperature and checks every fog collector for fallout volume, salt concentration, and collected-solution pH at the required intervals.

  • Exposure-zone temperature recorded with the chamber closed
  • Individual fog-collector volume reported in mL/h per 80 cm²
  • Collected-solution concentration or specific gravity checked at the measured temperature
  • Collected-solution pH measured and recorded
  • Exposure interruptions and their duration documented

Fog collection is measured, not claimed: Collector readings confirm whether actual chamber operation falls within the ASTM B117 range.

M Series Controls and Available Automation

Standard M Series Command Controls manage chamber temperature, bubble-tower temperature, fog operation, and test timing. Available control and automation options can add digital operation, data logging, automatic shutdown, and an automatic air-lift cover without changing the ASTM B117 exposure itself.

Feature Function
Water-jacket temperature control Maintains the B117 exposure-zone temperature
Bubble-tower control Controls conditioned atomizing-air temperature
Automatic shutdown timer* Ends fog operation at the programmed exposure time
Digital controls and data logging* Adds recorded chamber operating data and digital interface functions
Automatic air-lift cover* Assists opening and closing the chamber cover

*Optional

M Series Size 12 Chamber

The compact Size 12 configuration is intended for laboratories that need M Series water-jacket performance without the footprint of a larger production chamber. The low-profile working height provides convenient reach-in access for smaller panels, coupons, electronics hardware, plated components, and research specimens.

Product size

M Series Size 12

Usable test volume

Approximately 12 ft³

Approximately 339 liters

Chamber style

Low profile

Compact reach-in configuration

Designed, Built, and Supported in Ohio

Auto Technology designs, manufactures, and supports the M Series from its Ohio facility. The same water-jacketed chamber architecture is operated in Auto Technology’s own A2LA-accredited corrosion laboratory, providing direct experience with routine operation, maintenance, fog collection, and long-duration ASTM B117 testing.

Customers receive support from the company that builds and uses the equipment rather than relying on an imported cabinet with limited domestic technical support.

Configure an M Series Size 12 for ASTM B117

Provide specimen dimensions, loading quantity, exposure duration, required records, and available utilities so the chamber and racking can be configured for the program.

Request Configuration Assistance

ASTM B117 Size 12 Chamber FAQ

What exposure does ASTM B117 require?

ASTM B117 uses continuous neutral salt fog at 35°C ±2°C. The collected fog must meet the specified fallout, salt-concentration, and pH ranges.

Does ASTM B117 include wet and dry cycling?

No. ASTM B117 is a continuous salt-fog practice. A programmed dry, humidity, immersion, or temperature-transition step belongs to a different corrosion method.

How long is an ASTM B117 test?

ASTM B117 does not establish one universal duration. The governing product or material specification, or agreement between purchaser and seller, sets the exposure period and acceptance criteria.

Why use a water-jacketed chamber for B117?

The surrounding water mass distributes heat indirectly and moderates temperature changes, supporting stable conditions during long continuous exposures.

What is the capacity of the M Series Size 12?

The chamber provides approximately 12 ft³ or 339 L of usable test volume in a compact, low-profile configuration.

Is the chamber manufactured in the United States?

Yes. Auto Technology designs, manufactures, and supports the M Series from its Ohio facility.

What information is needed for a quote?

Provide specimen material and dimensions, loading quantity, required orientation, exposure duration, reporting requirements, and available electrical, compressed-air, water, drainage, and ventilation connections.

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