Methods:Cadmium column and acid-base resisting burette with knob-operated control were used to determine nitrate and nitrite in milk product.The method of national standard was improved.

• 方法:采用进口镉粒,用耐酸碱的活塞旋钮滴定管替代镉柱玻璃管,对国家标准方法镉柱法进行改进后,测定奶制品中硝酸盐和亚硝酸盐,结果:测定结果与国标测定方法一致。