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 800254 Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Price on request 200104 Tube Holder Housing, 5 x 150mm, 1/2", S255 [Kitaga Price on request 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request