Sterile Vacuum blood collection tube for single use: Sizes: 1ml, 2ml, 3ml;, 5ml, 10ml. SPEC: non-additive, additive. Product structure: test tube, piston, plastic cap. Product instruction: The products are made by medical glass, or highly transparent medical plastic materials. The products are matched with vacuum blood collection sets, and used as per the theory of negative pressure, and suck blood into the storage tube by the connecting tube, and can step the way of one vacuum blood collection needle with more storage tubes. Technical indication: Additive dosage of the products are accurate, blood sample capacities are also accurate. Scope for use: The products are used for collecting blood in clinic