申请人:MILES LABORATORIES, INC.
公开号:EP0071934A1
公开(公告)日:1983-02-16
Analytical element method of making the analytical element and process for determining an analyte in a body fluid sample are disclosed. More particularly, the method of preparing the element comprises the steps of: (a) impregnating a carrier with a first solution, having a pH not greater than about 2.5, which comprises a polymeric mordant and a tetraalkylbenzidine dihydrochloride, in a molar concentration greater than that of the polymeric mordant in an aqueous solvent and drying the carrier; (b) impregnating the carrier of (a) with a solution, having a pH of at least about 7.0, which comprises an analyte-responsive component in an aqueous solvent and drying the carrier. Optionally, there can be added the step of impregnating the carrier of (b) with a solution of a semi-permeable polymer in an organic solvent and drying the carrier.
本发明公开了制作分析元件的方法和测定体液样本中分析物的过程。更具体地说,制备分析元件的方法包括以下步骤(a) 用 pH 值不大于约 2.5 的第一溶液浸渍载体,该溶液包括聚合物媒染剂和四烷基联苯胺二盐酸盐,在水性溶剂中的摩尔浓度大于聚合物媒染剂的摩尔浓度,然后干燥载体;(b) 用 pH 值至少约为 7.0 的溶液浸渍(a)的载体,该溶液包括在水性溶剂中的分析反应成分,然后干燥载体。可选择添加以下步骤:用有机溶剂中的半透聚合物溶液浸渍(b)的载体,然后干燥载体。