Sorbent Tube, Silica Gel, 8X110, 300/150, 50/BX Back Catalog number: 811-9967-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800249 Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Price on request 800073 Tube Holder Dual Variable Flow, only Price on request 800149 Single Tube Holder Kit, 6 x 70mm (Standard Charcoa Price on request