Sorbent Tube, Silica Gel, 8X110, 520/360, 50/BX Back Catalog number: 811-9968-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800074 Tube Holder Triple Variable Flow, only Price on request 800139 Tube Holder Adapter for 1/2" Ends Price on request 811-9988-10 Sorbent Tube, Chromosorb-106, 10X150, 600/300, 10/ Price on request