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 400253 Tube Holder, Clear Storage Box Price on request 800063-10 Tube Holder Housing End, 1/2" for 5mm OD (Packg of Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request