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C甲醇色谱纯与水（1+1）
hromatographic pure methanol and water (1+1),
甲酸标准储备液（1.0mg/ml）
formic acid standard stock solution (1.0mg/ml),
精钠标准储备液（1.0mg/ml）
sodium saccharine standard stock solution (1.0mg/ml),
酸铵溶液（0.02mol/l）
acid ammonium salt solution (0.02mol/l).

High-performance liquid chromatography (HPLC) and water (1+1)
Formic acid standard solution (1.0mg/ml)
Saccharin standard solution (1.0mg/ml)
Ammonium solution (0.02mol/l)