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 SC-9 Tedlar Bag (45.0L) Price on request 800252 Single Variable Flow Starter Kit (Includes 6x70mm, 7-10x110mm, 7-10x150mm, 7-10x175mm) Price on request 800140 NEEDLE VALVE with O-rings for LFS-113 and LOW FLOW MODULE Price on request