发明名称 Stabilized enzymic solutions for determining urea
摘要 A stabilized urease solution is disclosed comprising water, buffering agents, a bacteriostat, chelating agent, polyhydroxy organic compound and urease. The preferred buffering agents are selected from low conductivity Zwitterionic buffer salts, such as N-2-hydroxyethyl-piperazine-N'-2-ethanesulfonic acid, triethanolamine, tris(hydroxymethyl)aminomethane, diethanolamine, aminomethyl propanol and mixtures thereof.
申请公布号 US4282316(A) 申请公布日期 1981.08.04
申请号 US19790074544 申请日期 1979.09.11
申请人 MODROVICH, IVAN E. 发明人 MODROVICH, IVAN E.
分类号 C12N9/80;C12N9/96;C12Q1/58;(IPC1-7):C12Q1/58 主分类号 C12N9/80
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