Charcoal Tube, Coconut Shell, Standard, 50/100mg, Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 811-9971-50 Sorbent Tube, Silica (H2SO2), 6X70, 150/75, 50/BX Price on request 800142-10 Tube Holder Collar Clip, for 3/8" OD, 1/4" ID Tubi Price on request 800170 Tube Holder Hose Barb Fitting Price on request