ISO 4274-1977 标准详情
- 标准号:ISO 4274-1977
- 中文标题:工业用尿素-缩二脲含量测定-火焰原子吸收和光度吸收法
- 英文标题:urea for industrial use-determination of biuret content-flame atomic absorption and photometric absorption methods
- 标准类别:国际标准化组织标准ISO
- 发布日期:1977-10-15
Applicable to products having contents of equal to or more than 0.05 % (m/m) (with flame atomic absorption) or 0.1 % (m/m) (with fotometric absorption). Covers the formation of a complex between biuret and copper(II) sulphate in alkaline medium. Fixa
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