Gel and Clot Activator Tube is coated with micronised silica particles which causes blood to clot rapidly. The Gel and Clot Activator Tube contains the barrier gel that can separate the serum from fibrin and cells while preventing substance exchange between blood cell and serum. The Gel and Clot Activator Tube is widely used for clinical biochemistry serum test serology and immunology test. Gel and Clot Activator Tube comes with yellow coloured cap and is available in various ranges like 13 X 75 mm, 13 X 100 mm and 16 X 100 mm.