Vacuum blood collection tubeApplication: Gel & Clot Activator Tube is used for clinical biochemistry and immunology. Inside the tube there is a barrier gel present at the bottom, which is a pure substance, very stable in physical and chemical features. Even under a high temperature as 90, the barrier will not change inside at all.After centrifugation, the barrier can effectively separate the serum from fibrin and cells, while preventing substance exchange between blood cell and serum. As a result, it can keep biochemical characters and chemical components of serum unchanged for a long time.Serum can also be aspirated directly from the collection tube, no need for transfer to another container.Material: PET, GlassDraw Volume: 3ml 9mlCap Color: yellowSpecification: 13×75/13×100/16×100mmPackage: 100pcs/tray 1200pcs/carton 370×310×275/370×310×350/430×350×340mmUsage Instructions: It is coated with Clot Activator on the interior of the tube wall to accelerate blood clotting. A barrier polymer gel is presented at the tube bottom. The density of this material causes it to move upward during centrifugation to the serum clot interface, where it forms a barrier separating serum from fibrin and cells. Invert tube 5 7 times once blood specimen is collected. It should be centrifuged no later than 2 hours after collection. Centrifugation should be rpm 3000 3500.