A dry analytical element comprising at least one water-permeable reagent layer and a porous spreading layer laminated in this order on a support, wherein at least one layer which is the water-permeable reagent layer, the porous spreading layer or an optional water-permeable layer contains a water-soluble polybasic amino carboxylic acid which is an ampholyte.
By applying an analytical element of the invention, an analyte can be measured at a high sensitivity using a small amount of an enzyme, etc., and shelf file can be extended.
一种干式分析元件,包括至少一层透
水试剂层和一层多孔铺展层,依次层叠在一个支架上,其中至少有一层是透
水试剂层、多孔铺展层或任选透
水层,含有一种
水溶性聚碱性
氨基
羧酸,它是一种两性离子。
通过应用本发明的分析元件,可以使用少量的酶等以高灵敏度测量分析物,并延长保质期。