We can supply you with following blood collection tubes: 1, Gel and clot activator tube,yellow cap; 2, Clot activator tube,orange cap; 3, No additives tube,red cap; 4, EDTA tube,lavender cap; 5, Sodium heparin tube,green cap; 6, Sodium citrate tube, blue cap; 7, ESR tube, balck cap; 8, Glucose tueb, grey cap Product Feature: Our high-quality tubes are featured with Safety, Accuracy, Convenience and Quickness. Save your time, improve your efficiency. Material: glass and plastic. The specifications:75mmX12mm, 75mmX13mm, 100mmX12mm, 100mmX13mm, 100mmX15mm, 100mmX16mm Blood draw: from 1ml to 10ml Application: they are used together with blood collection needle for blood collecting in clinic and test in lab. Other Information Our company spirit: People-oriented for science, RICH Science for people.