UNE 55539-6:1994现行
Surface Active Agents - Methods For Preparation, Standardization And Storage Of Standard Solutions To Be Used In Volumetric Analysis Of Surface Active Agents And Formulations Containing Them - Part 6: Solutions Of Ammonium Thiocyanate Of Concentration 0,1 Mol/l
出版：Asociacion Espanola de Normalizacion
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