Disposable Blood Collection Vacuum Tube PET/Glass Tube Material: PET or Glass Tube size: 13*75/ 13*100*16*100mm Additive Solvents represented by different colors: Red Tube: no Additive or coagulant Additive Yellow Tube: Gel& Clot activatorGrey Tube: Inhibitor for Glucolysis Blue Tube: 3.2% sodium citrate Green Tube: Heparin sodium/Heparin lithium Purple Tube: K2EDTA/K3EDTABlack Tube: 3.2% or 3.8% sodium citrate Questiones: Q1.ls the price negotiable? Yes, the price is negotiable. lt depends on the order quantity. Q2. Can you send samples?When will the goods ship ? Yes, we can send samples to you to test the quality. We have enough stock to ship out within 72hours.The samples can be shipped by DHL, TNT, FEDEX, EMS, EPACKET..ECT. Q3. Can I make my logo on the sample? Yes, logo can be printed on t…