Sorbent Tube, XAD-2, 8X110, 100/50, 50/BX Back Catalog number: 811-9973-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request 811-9989-20 Sorbent Tube, Beaded Carbon, 6X70, 140/70, 20/BX Price on request 800074 Tube Holder Triple Variable Flow, only Price on request