Posted on December 19, 2017December 20, 2017 by Pulse AssentISO 7393-2:2017 Water quality. Determination of free chlorine and total chlorine Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes Link: ISO 7393-2:2017 Water quality. Determination of free chlorine and total chlorine Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes Source: BSI Standards Related Posts:Philippines eligible for duty free access to…Joint statement on the launch of Free Trade…Joint Statement on the launch of the negotiations…Big boost for UK economy as subsidy control system…New subsidy control system will support UK jobs,…