Sorbent Tube, XAD-2, 6X110, 120/60, 20/BX Back Catalog number: 811-9977-20 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800238 Tube Holder O-Ring Kit Price on request 811-9969-100 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 100/BX Price on request 811-9966-50 Sorbent Tube, Silica Gel, 6X70, 100/50, 50/BX Price on request