WHEATON® µL MicroLiter® Component Kit, Concentrator, Vial Component Kits are shipped with a pack of vials, a pack of caps and a pack of septa. Currently Out of Stock. Bonded PTFE / Silicone Septa: WHITE: BT SCIENCE | Research Supplier Products in Malaysia – Vials 23x75mm. Headspace Vials (Flat Bottom & Round Bottom) 10ml. 20ml.