Soldering terminology

According to the Duden dictionary of foreign words, the radical in matrix is mother or origin in Latin. In chemistry, this term refers to an excipient into which other substances are integrated or inserted. If, for example, an attempt is made to remove chemical reaction products or reaction residues with a solvent in which they do not actually show good solubility, the solvent still digs into the surface of the compounds to be removed and flushes them in the form of a larger solutions network. This is called the matrix effect. In soldering, this effect occurs when trying to use a strong solvent to remove tin, lead, or other metal salts separated from rosin.