Sorbent Tube, Porapak-N, 6X70, 88/44, 50/BX Back Catalog number: 811-9981-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800170 Tube Holder Hose Barb Fitting Price on request 124SA Sensidyne Gas Detector Tubes, Toluene (10-500 ppm), pk/10 Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request