Charcoal Tube, Coconut Shell, Standard, 50/100mg, Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 800138 Tube Holder Adapter for 5/8" Ends Price on request