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 200157 U-Tube replacement for P/N 800143 Price on request 800238 Tube Holder O-Ring Kit Price on request 800258 Single Variable Flow Kit, 7 x 130mm [Dräger Long Price on request