BD Microtainer� Blood Collection Tubes Case 365985 by BD GROUP: Lab Equipment & Accessories:Blood Collection Products:Tubes Item Description: Tube, PST�, Microgard� Closure, Lithium Heparin, 50/pk, 4 pk/Case Packaging Desc: Microtainer W/Microgard Closrw/Heparin/Plasma Sep 50/Pack 4Pk/Case Country of Origin: Harmonized Tariff Code: Product Description: Wide-mouth pathway of flo-top collector permits capillary blood to flow freely into tube, minimizing chance of premature clotting in collection top. The unique "twist-assist" MICROGARD� closure significantly reduces blood splatter upon removal, in comparison with other tube closures. 200-400 micro-liter capacity. Made of break-resistant plastic.