FREMGANGSMADE TIL BESTEMMELSE AF BLODS ELLER ET BLODDERIVATS EVNE TIL AT KOAGULERE OG REAGENS TIL BRUG HERVED

摘要

Blood clotting function assays are improved by the use of a colloidal silica contact activator made by the process comprising (a) contacting an alkali silicate solution with an ion-exchange material for removing alkali metal ions from the silicate solution, and (b) recovering the colloidally dispersed particles from the ion exchange material.