Sorbent Tube, Microlite, 6X70, 200mg, 50/BX Back Catalog number: 811-9963-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200157 U-Tube replacement for P/N 800143 Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request 800064 Tube Holder Housing End, 5/8", for 7-10mm Price on request