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 800251 Tube Holder Kit, Dual Variable Manifold (Includes 6x70mm, 7-10x110mm, 7-10x150mm, 7-10x175mm) Price on request 103SD Sulphur Dioxide 1-60 ppm Gas Detector Tube, pk/10 Price on request 800254 Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Tubes] Price on request