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 800249 Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Price on request 811-9969-20 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 20/BX Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request