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 F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 800064-10 Tube Holder Housing End, 5/8", for 7-10mm (Packg o Price on request 800258 Single Variable Flow Kit, 7 x 130mm [Dräger Long Price on request