Sorbent Tube, Porapak-R 6X70, 70/35, 50/BX Back Catalog number: 811-9984-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9970-50 Sorbent Tube, Silica (Spec Clean), 7X110, 50/BX Price on request 200131 Impinger Holder, Double, Aluminum, GilAir/HFS Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request