blood collection tube,no additive tube,ESR tube,EDKA tube,GLUCOSE tube,CITRATE tube... Type: 1. Gel & Clot Activator tube(SST tube) with yellow closure for quick serum separation; 2. Clot Activator tube with orange closure for quick serum separation; 3.No additive tube with red closure 4. EDTA2 (EDTA3) tube with lavender closure; 5. Sodium Heparin tube with green closure; 6. Sodium Citrate tube with Blue Closure for blood coaguation test (1:9); 7. Sodium Citrate tube(ESR tube) with black closure for blood sedementation test (1:4); 8. Sodium Fluoride & Potassium Oxalate tube with grey closure for blood glucose test. Materal: Glass and plastic. Specification: 75mmX12mm, 75mmX13mm, 100mmX12mm, 100mmX13mm, 100mmX15mm, 100mmX16mm. Blood draw: From 1ml to 10ml. They are used together with blood collection needle for blood collecting. CE0197,ISO13485:2003,ISO9001:2000