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MX-9204 Environmental Testing Chamber
Illustration of man next to  for scale
 Environmental Testing Chamber
Illustration of man next to  for scale



The unique features of the salt spray test chamber, allows you better observation and access to your corrosion testing. The construction is made of high-quality Lucite®️ plexiglass on five sides making it the only 360-degree view into the chamber workspace. 

Completely self-contained, the MX Series salt spray chambers allow for test items to be subjected to a corrosive environment without introducing other contaminants into the test area. 

STANDARDS.  The standard MX-9204 salt spray test chamber has an atomizing nozzle that can be factory set to be compliant with the following standards:

HEATING SYSTEM.  To ensure temperature uniformity in the test workspace, the unit uses two separate RTD sensors. One for holding and conditioning incoming water to an accurate 45.5°C (113.9°F).  As the water is mixed with the salt solution and atomized the temperature falls. In the product workspace, a second RTD sensor holds the ambient temperature at a steady 35°C (95°F) as the fog fills the workspace.

Salt Spray chambers are commonly used to evaluate the corrosive properties of:

  • Phosphated surfaces (with subsequent paint/primer/lacquer/rust preventive)
  • Zinc and Zinc-alloy plating (see also electroplating)
  • Electroplated chromium, nickel, copper and tin
  • Coatings not applied electrolytically (such as zinc flake coatings)
  • Organic Coatings
  • Paint Coatings

INSTRUMENTATION. MX9204 Test Chambers incorporates AESONE CONNECT  creating a robust connected device giving you a standard and uniform interface that makes operation easier. Learn more in the Instrumentation Tab below.

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  • Specifications
  • Standard Features
  • Instrumentation
  • Safety Features
  • Optional Features
  • Downloads
  • Videos


MX Series

Illustration of a 6-foot tall man
Height: 72" (6' tall)


Height: 30.5"
Volume: 3.38 cu. ft.


Height: 38"
Volume: 8 cu. ft.


Height: 51.5"
Volume: 15.63 cu. ft.
Interior: 18.0W x 18.0D x 18.0H (in)
  457.2W x 457.2D x 457.2H (mm)
Exterior: 40.5W x 26.5D x 30.5H (in)
  1028.7W x 673.1D x 774.7H (mm)
Volume: 3.38 cubic ft
  95.71 liters
Tower Temperature: 45.5 °C (114°F)
Chamber Temperature: 35 °C (95 °F)
Salt Solution Capacity: 6.9 gal (26 liters)
Saturation Tower Capacity: 1.9 gal (7.0 liters)
Approximate Operating Hours: 144 hours
Compressed Air Requirements: 30PSI
Electrical Supply:  120 VAC, 1 PH, 60 HZ
Full Load Amps: 7 A
Power Requirement: NEMA 5-15
Mobility: Will fit through 32 in doorway
Approximate Product Weight: 263.0 lbs (119 kg) without added options
Approximate Shipping Weight: 378.0 lbs (171 kg) without added options

*Ideal ambient temperature conditions for test chambers is 23°C (73.4°F). The temperature and humidity range of assured performance is between 15°C and 25°C (59°F/77°F) and 30-50% relative humidity. Conditions outside this range may affect the performance of your test chamber and reduce the lifespan of the equipment.

Standard Features


  • Temperatures
    • Tower +45.5°C (+114°F)
    • Workspace +35°C (+95°F) 
  • Meets ASTM B117 standard
  • Single tower water conditioning
  • Benchtop Style
  • Transparent Lucite Construction features visual observation of items being tested
  • Stainless steel base
  • Tower Level Control
  • Salt Spray Reservoir Level control with 10-gallon saltwater storage tank (auto refill system)
  • Salt Fog Collectors 80cm Horizontal Area (2 Required) compliant with ASTM-B117



CONTROLLER   AESONE CONNECT allows for secure remote access to your test chamber and gives easy profile creation, operational control, and data management.

MX Series Test Chambers have incorporated AESONE CONNECT creating a robust connected device for a standard and uniform interface making test chamber operation easier.

AESONE XCHANGE is hardware internal to the chamber that increases your functionality

  • Connects the test chamber controller to your network for increased accessibility
  • On-board multi-year data logging

AESONE SOFTWARE gives you the power to

  • Remote chamber operation and monitoring, 
  • Web-based test profile creation, 
  • Viewing current data and historical data visually
  • Secure multi-level user access 


WATLOW F4T PROGRAMMABLE CONTROLLER. Features a 4.3” capacitive touchscreen minimizing the chance for error. Ethernet communication supported by AESONE HARDWARE. View more controller options


  • TEMPERATURE SENSOR. Measured at the point of airflow entering the workspace. Class A, 3-wire, 100 Ohm Platinum RTD sensor

OPTIONAL DATA LOGGERS. View additional data loggers

Safety Features


Internal thermal heat fuse interrupts electricity flow if it reaches a preset temperature

Optional Features

  • Special Filter for MIL-STD-202H and 810H (P/N 86264)
  • Modification to Meet MIL-STD-883K Method 1009.8 Procedure 3.1
  • Water Demineralizer System
  • Floor Stand