4 Specifications: 0.5mL Self-standing, 1. 5mL Self-standing, 1. 5mL Conical bottom, 2. 0mL Self-standing, meeting demands of different applications. Round Bottom, Self-standing: 3 styles with self-standing round bottom design, making the vial placed on the lab workbench steadily even without a base. Electron Beam Sterilization, SAL=10-6: safe, fast, environment-friendly, no chemical residues. 100,000-level Clean Workshop Production, DNAse-free, RNAse-free, pyrogen-free, endotoxin-free. PLEASE NOTE: PHOTO SHOWS BLUE CAPS, OUR INVENTORY IS SUPPLIED WITH NATURAL COLOR CAPS.