Sorbent Tube, Silica Gel, 6X70, 150/75, 50/BX Back Catalog number: 811-9965-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request 800073 Tube Holder Dual Variable Flow, only Price on request 200157 U-Tube replacement for P/N 800143 Price on request