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 811-9974-50 Sorbent Tube, XAD-2, 8X110, 150/75, 50/BX Price on request 811-9989-20 Sorbent Tube, Beaded Carbon, 6X70, 140/70, 20/BX Price on request 800232 Tube Holder Kit, Deluxe (Single, Dual, Triple & Qu Price on request