ISO 2752-1973 标准详情
- 标准号:ISO 2752-1973
- 中文标题:工业用尿素-存在甲醛时PH值变化测量-电势测定法
- 英文标题:urea for industrial use-measurement of the variation of ph in the presence of formaldehyde-potentiometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1973-12-01
Specifies the principle of measurement, at (20 0.5) 0C, of the quantity of 0.01 N sodium hydroxide standard volumetric solution required to take the pH of a solution containing 50 g of sample in 100 ml of water to a pH of 8.3 after addition of formal
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