ÖNORM EN 1911-3

This European standard specifies methods for analysis of chlorides resulting from hydrogen chloride absorption, according to EN 191 1-2, in waste gases having been sampled and filtered according to EN 191 1-1. All compounds which are volatile at the filtration temperature and produce chloride ions upon dissolution during sampling are measured by this method, which gives therefore the volatile inorganic chlorides content of gases expressed as HCI. In most cases, this corresponds to the hydrogen chloride content ; an indicative distinction between hydrogen chloride and volatile chlorides may be achieved, using additional checks. This standard specifies also validation criteria for the whole HCI measurement method described in EN 191 1-1, EN 191 1-2 and EN 191 1-3, and indicates the performance characteristics of this measurement method.