Vacuum Blood Collection Tube (Orange cap) Tube material: glass or plastic. Volume of blood draw (ml): 1~10ml Tube Spec.(mm):12/13*75,12/13*100,15/16*100,15*120mm Tube with Orange cap, called Clot Activator Tube Pro-coagulation Tube, with additive of Clot Activator, used for blood collection and Conventional serum experiment (clinical biochemistry test, immunity test ,Radioimmunoassay test, PCR, etc. )