I3A IT4.189-1984R2001)
Photography (Chemicals) - Ferric Ammonium Ethylenediaminetetraacetate Solution and Sodium Ferric Ethylenediaminetetraacetate Trihydrate (reaffirmation and redesignation of ANSI/NAPM IT4.189-1984 (R1995))
I3A IT4.189-1984R2001)
German standard methods for the examination of water, waste water and sludge; individual constituents (group P); determination of ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) by polarography (P 5)