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The Working Principle and Application of SO₂ Corrosion Test Chamber

For products such as metals, electroplating layers, and electronic components, the SO₂ (sulfur dioxide) corrosion test chamber has become an important tool for measuring their resistance to acidic gas corrosion.

So₂ Corrosion Test Chamber: Precisely Restore the Acidic Corrosive Environment

The basic principle of the SO₂ corrosion test chamber is to inject sulfur dioxide gas of controlled concentration into a closed space, combined with set temperature and humidity, to simulate the corrosion effects on materials in real environments such as acid rain and industrial emissions. SO₂ reacts with water under high humidity conditions to form sulfurous acid, thereby causing corrosion on the metal surface.

The SO₂ corrosion test chamber of LIB adopts advanced gas control and environmental simulation technology, which can precisely adjust the SO₂ concentration, temperature and humidity, and test cycle, ensuring a stable and highly repeatable testing process.

Model	SO-100	SO-225	SO-500	SO-800	SO-1000
Temperature Range	15 ℃ ～ 80 ℃
Temperature Fluctuation	± 0.5 ℃
Humidity Range	30% ~ 98% RH
Humidity Deviation	±1% RH
SO2 Concentration	25±5 ppm
Air Change Rate	3~5 /h
Water Supply System	Water purification system, Automatic water supply
Controller	Programmable color LCD touch screen controller Ethernet connection, PC Link
Gas Sensor	SO2 gas sensor
Door Lock	Electromagnetic lock
Gas Exhaust Device	SO2 Exhaust Unit

The inner working chamber is made of a combination of SUS316 stainless steel and glass fiber reinforced plastic (FRP), which not only has excellent corrosion resistance but also ensures the structural strength and service life of the equipment during long-term operation.

In addition, LIB SO₂ corrosion test chamber is equipped with an automatic gas injection system and a residual gas neutralization and emission device. While ensuring the testing efficiency, it also attaches great importance to the safety and environmental protection requirements of the operators.

The touch screen is intuitive and convenient to operate, and it supports data recording and remote control functions, which greatly improves the efficiency of laboratory management.

SO₂ Corrosion Tests Are Widely Applicable to Multiple Industries:

Electronics/power industry: Test the corrosion resistance of connectors, terminals and circuit boards;

Automobile manufacturing: Verify the stability of vehicle lamps, electroplated trim parts, nameplates, etc. in acidic environments;

Metals and Coatings industry: Evaluate the long-term protective capabilities of spraying, electroplating, and anodizing treatments;

Building materials/bathroom products: Used to test the surface durability of metal parts in highly polluted environments.

LIB's High-Standard Testing Facilitates High-Quality Manufacturing

SO₂ corrosion test is not only a detection method, but also a key link to enhance the competitiveness of products. Welcome to contact LIB for customized solutions and quotation support, allowing your products to stand out in harsh environments!