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手持式氨氮测定仪
NH-1S型手持式氨氮测定仪采用纳氏比色法测量水中的氨氮,该方法具有操作简便、灵敏度高等特点。其原理是:以游离态的氨或铵离子等形式存在的氨氮与钠氏试剂反应生成黄棕色络合物,该络合物的色度与氨氮的含量成正比。 主机1台、4节5号电池、氨氮试剂1套 ...
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