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 811-9985-50 Sorbent Tube, Florisil, 6X70, 100/50, 50/BX Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request 200131 Impinger Holder, Double, Aluminum, GilAir/HFS Price on request