Distilled water or tertiary water meets the requirements of GB/T 6682.
Acetylacetone reagent (Nessler's reagent) Add 150g ammonium acetate into a 1000mL volumetric flask, dissolve it with 800mL water, then add 3mL glacial acetic acid and 2mL acetylacetone, dilute it to scale with water and store it in a brown flask.
Normative reference documents:
The clauses in the following documents become the clauses in this part of GB/T 29 12 by reference. All subsequent modifications (excluding errata) or revisions of dated reference documents are not applicable to this part.
However, the parties who have reached an agreement under this part are encouraged to study whether the latest versions of these documents can be used. For undated reference documents, the latest version is applicable to this part.
GB/T 6529 Standard Atmosphere for Moisture Control and Testing of Textiles (GB/T 6529—2008, ISO 139: 2005, MOD).
GB/T 6682 "Specification and Test Method of Water for Analytical Laboratories" (GB/T 6682—2008, ISO 3696: 1987, MOD).
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