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 7013601 TUBE TIP CUTTER Price on request 800075 Tube Holder Quad Variable Flow, only Price on request 800139 Tube Holder Adapter for 1/2" Ends Price on request