Enzymatic technique using a lyophilised chromogen, kit and method of lyophilisation

摘要

An enzymatic technique employing the development of peroxidase with DAB (3,3'-diaminobenzidine tetrahydrochloride) as chromogen, characterised in that use is made of DAB stored in a freeze-dried form which is redissolved in an aqueous medium. The invention also relates to a kit of reactants for making use of this technique and to a process for freeze-drying DAB.