AES: Salt Spray / Fog Chambers

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Salt Spray / Fog Chambers


	LR-MX-9200

Salt Spray / Fog Chamber

Corrosive atmosphere chambers subject test items to corrosion without introducing other contaminants into the test area.

Our salt spray chambers are entirely self-contained. The basic chamber conforms to military specifications, including MIL-STD-810, and is also used for many commercial and ASTM specifications.

The LR-MX-9200 corrosive atmosphere chamber:

Has a transparent Lucite test area that is impervious to corrosion.
Provides continuous direct visual observation of the test item.
Contains thermostats and metallic items made of Monel to avoid transference and minimize corrosion.
Provides lucite rods to hang or support items within the test area.
Performs continuous unattended tests for up to 72 hours. This period may be extended by adding an external storage tank, a tower level control and a salt solution reservoir level control to automatically refill the system.

A high reliability thermostatic temperature controller maintains the salt solution at a preset controlled temperature in a reservoir within the double wall construction. The salt solution is introduced into the chamber through an atomizing nozzle. The nozzle can be calibrated by us to perform to MIL-STD-19500B, paragraph 40.8 and other specifications. This specification requires that a salt residue be deposited on the specimens, in addition to generating salt fog atmosphere.

The preparation of a salt solution consists normally of sodium chloride containing as a dry compound not more than 0.1% of sodium iodide and not more than 0.2% of total impurities. This solution is prepared by dissolving five parts by weight of salt in 95 parts by weight of distilled water. It is important to maintain this solution at a specific gravity of from 1.023 to 1.037. The solution is maintained at a controlled temperature of 95°F by the chamber's own integral temperature control system (temperature is adjustable).