Charcoal Tube, Coconut Shell, Standard, 50/100mg, Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 800134-10 Tube Holder Collar Clip, for 7/16" OD, 5/16" ID Tu Price on request 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request 811-9979-50 Sorbent Tube, XAD-7, 6X110, 100/50, 50/BX Price on request