(3). Screw headspace caps, septa, and vials are designed especially for use with Aijiren's and CTC rotating or robotic arm samplers. (4). Round bottom headspace vials (5). Septa are blue (PTFE) sample side; white (Silicone) outside (6). 10ml, 20ml, 22.5 x 46/75.5mm vial, 17.5 x 1.5mm septa, 18mm metal screw cap