DIN 50451-6:2014-11
Действует
Testing of materials for semiconductor technology - Determination of traces of elements in liquids - Part 6: Determination of 36 elements in a high-purity ammonium fluoride solution (NH<(Index)4>F) and in etching mixtures of high-purity ammonium fluoride solution containing hydrofluoric acid
— 14 стр.
