vacuum blood collection tube has a series of belowed items of vacuum blood collection tubes: 1. Plain (no additive, serum) tube (Red cap); 2. Clot activator (Pro-coagulation) tube(Orange cap); 3. Gel clot activator (SST) tube(Yellow cap); 4. Glucose (sodium fluoride, oxalate) tube (Grey cap); 5. Sodium Citrate tube (1:9) (Blue cap); 6. Sodium (Lithium)Heparin tubes (Green cap); 7. EDTA K2 (K3, Na2) tube(Lavender cap); 8. ESR tube (1:4)(Black cap). 9. 1.28ml ESR tube Glass material(Black cap). We have got ISO 13485 & CE certification of the vacuum blood collection tube, The material can be PET or Glass, With experience of exporting to: Europe, Russia, Middle East, South East Asia, East Asia,South Asia, South America,etc More than 15 years' experice in developping and manufacturing products with high quality. Welcome to contact us for further information and support!