Sorbent Tube, Silica Gel, 6X70, 100/50, 50/BX Back Catalog number: 811-9966-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request 800254 Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Price on request 800249 Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Price on request