Posted 1 July 2007
Choosing the correct grade of stainless steel for a tank, pipe or process vessel requires (at the very least) information about the temperature, pH and chemical composition of the contents. One of the most important items of the chemical composition is how much chloride (salt) is present. Analysis reports often give the concentration as milligrams per litre (mg/L) or sometimes as parts per million (ppm) of Cl. However, Cl is also the symbol used for the element chlorine.