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 800064-10 Tube Holder Housing End, 5/8", for 7-10mm (Packg of 10) Price on request 811-9978-20 Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Price on request 118SC Sensidyne Gas Detector Tubes, Benzene (1-100 ppm), pk/10 Price on request