Sorbent Tube, XAD-2, 8X110, 400/200, 50/BX Back Catalog number: 811-9975-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200104-10 Tube Holder Housing, 5 x 150mm, 1/2", S255 (pkg of 10) Price on request 800254 Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Tubes] Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request