A salt spray chamber runs a corrosive salt fog environment by design, which means the equipment itself is under constant attack from the same conditions it creates. Chambers that aren't maintained on a routine schedule drift out of specification long before they visibly break down — usually showing up as inconsistent test results before any hardware failure.
This checklist covers the maintenance points that matter most for keeping results consistent and extending chamber life.
These are quick checks that take a few minutes but prevent salt buildup from becoming a bigger problem:
On a weekly basis, or after every few test cycles depending on usage:
Longer-interval maintenance protects calibration accuracy and chamber longevity:
The most frequent issues we see reported are avoidable: using tap water with high mineral content instead of the specified distilled/deionised water for solution preparation (causes scale buildup in the atomizer and piping), leaving salt solution sitting in the tank between tests instead of draining it, skipping nozzle checks until fog output visibly drops, and not rinsing the chamber interior after test cycles — allowing dried salt to slowly corrode chamber components that aren't built for prolonged direct salt contact.
If you notice inconsistent fog collection rate between otherwise identical test setups, unexplained temperature fluctuation, or visible corrosion on internal chamber fittings, get it checked before running further tests — results from a chamber operating outside its calibrated parameters aren't valid, even if the test procedure itself was followed correctly.
UMA Industries manufactures Basic, ASTM B117 / ISO 9227 and Graphical Touch Screen salt spray chambers for corrosion testing laboratories and industrial QC departments across India.