Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Back Catalog number: 811-9978-20 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request 400253 Tube Holder, Clear Storage Box Price on request 800165-10 Sorbent tube adapter nipple for Dual manifold High Flow Splitter (10 Pack) Price on request