Corrosion Testing Instruments

Determining the long-term corrosion protection properties of paints and coatings is essential for estimating the economic service life and warranty periods of products. National and international standard norms have been established to assess the impact of corrosive influences such as weathering, temperature fluctuations, humidity, and coastal atmosphere on materials and products.
Corrosion tests are conducted in two ways:

• Real-time exposure tests under natural environmental conditions
• Accelerated laboratory tests with intensified corrosive effects

Tests carried out under natural conditions require extended periods to obtain results. Moreover, due to the varying corrosive environments in different test locations around the world, comparing test outcomes can be challenging. For this reason, corrosion test chambers—where elevated temperature, constant high humidity (condensation), and salt spray (salt fog) are standardized—have become essential quality control tests across all industries, especially in the automotive sector. These tests are categorized into single (static) and cyclic corrosion tests, simulating aggressive environmental conditions in a controlled laboratory setting.

Liebisch corrosion test chambers are specifically designed for these types of tests. A wide range of commonly used standard test methods can be performed with these devices.

Model Options
More than 50 model variations are available, featuring 3 different configurations—benchtop, cabinet, and chest-type—across 5 different volume capacities, each designed with specific test systems suited for different corrosion test standards.

Test Systems
Depending on the requirements of the corrosion test, continuous or cyclic tests can be conducted using systems such as Salt Spray, Constant Condensation Humidity, Ventilation, Drying / Hot Air, Adjustable Humidity, Cooling, or Rain Simulation.

Design
Liebisch Test Chambers are made of glass fiber reinforced plastic (GRP), providing durability, corrosion resistance, and resistance to warping. A galvanized steel frame ensures long-term mechanical strength.

Control Panel
Chambers are available with manual or automatic control panels. In manual models, test parameters are input manually, whereas PLC-controlled automatic models come with preloaded standard programs and allow for the creation of custom test cycles. Both systems automatically manage air and demineralized water supply, as well as humidifier water levels, and issue audible alarms and cut off heating and spraying in the event of a malfunction. Automatic models additionally log the date, time, and type of error when a test is interrupted.