Sorbent Tube, Silica (Spec Clean), 7X110, 50/BX Back Catalog number: 811-9970-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9902-50 Charcoal Tube, Coconut Shell, Large, 200/400mg, 8x Price on request 800071 Tube Holder Housing End, 5/8", for 1/4" OD, Open E Price on request 811-9971-50 Sorbent Tube, Silica (H2SO2), 6X70, 150/75, 50/BX Price on request