怎样鉴别尿素的真伪

• 出 处: 现代农业
• 发表日期: 1994年11期
• 关键词: 湿剂 颗粒状 碱水 观察法 科技报 烧红 铁片

怎样鉴别尿素的真伪一、观察法。尿素为纯白色，似鱼卵的半透明颗粒状（因加有防湿剂），也有少数产品是白色粉末状结晶，用放大镜细看则呈针状或菱柱状。二、碱水法。取尿素少许，投入石灰众中，天臭气的是纯尿素，有臭气（氨气）的是其它化肥或掺有其它化肥。三、的烧法...

How to identify the authenticity of urea First, the observation method. Urea is pure white, translucent particles like fish eggs (due to add anti-damaging agent), there are a few products are white powder crystals, with a magnifying glass look acicular or linguine. Second, alkali water law. Take a little urea, lime into the crowd, the weather is pure urea, there is odor (ammonia) is mixed with other fertilizers or other fertilizers. Third, the burning method ...