Comparison : Item # 8062-40, Tube, Dual Purpose, All-Glass, 1mL, Size 20
Item # 8062-42, Tube, Dual Purpose, All-Glass, 3mL, Size 21
Item # 8062-44, Tube, Dual Purpose, All-Glass, 5mL, Size 22
Item # 8062-46, Tube, Dual Purpose, All-Glass, 15mL, Size 23
Item # 8062-48, Tube, Dual Purpose, All-Glass, 30mL, Size 24