Corrosale, by Galli, is an exceptionally pure form of Sodium Chloride (NaCl), specially refined for corrosion testing.
Although common salt is readily available, finding pure, additive-free sodium chloride, as required by the Standards, is much more difficult. This is because, due to its hygroscopic nature, which causes it to clump or solidify, most commercial salts, such as table salt, require the addition of anti-caking agents—substances that are not permitted in most official test methods.
The ASTM B117 Standard, the most recognized in the world for salt spray testing, explicitly prohibits the use of anti-caking agents and also imposes strict limits on contamination levels: total impurities must be less than 0.3%, halides (excluding chloride) must be less than 0.1%, and copper must not exceed 0.3 ppm. These limits require highly purified salt.
Not only does ASTM B117 require purity, but other international corrosion testing standards are equally demanding.
To ensure that Corrosale fully meets these requirements, Galli supplies each package of Corrosale with a Certificate of Analysis that guarantees its quality.