Vacumed urine has various sizes they are, In series no 42952, Vacumed has 13x75 mm without preservative x 4 ml of urine yellow cap, sterile. In series no 43956 Vacumed 13x100 mm without preservative x 6 ml of urine yellow cap, sterile. In series no 44950 Vacumed 16x100 mm without preservative x 10 ml of urine, yellow cap, sterile.