Specification: 12/13 X 75mm, 12/13 X 100mm, 15/16 X 100mm Additive: No additive Blood Volume (ml): 3, 4, 5, 6,7, 9, 10 Packing: (1). For 12/13 X 75mm, 12/13 X 100mm: 1200 PCS per carton (2). For15/16 X 100mm: 600 PCS per carton Description: It used for blood collection and storage for biochemistry, immunology and serology tests in labs/hospitals. Strict tube washing technology and stopper treated with anti-precipitation film make the tube usable for trace element test. Tube inner wall treated specially possesses a good biocompatibility with blood, avoiding effectively hemolysis and blood sticking to the tube. This tube can provide enough and nonpolluted serum specimen for clinical test, while keeping the serum invariable in a long test period. 1200PCS per Carton