Sorbent Tube, Porapak-P, 6X110, 100/50, 50/BX Back Catalog number: 811-9982-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9969-20 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 20/BX Price on request 800063-10 Tube Holder Housing End, 1/2" for 5mm OD (Packg of Price on request 800075 Tube Holder Quad Variable Flow, only Price on request