Charcoal Tube, Coconut Shell, Standard, 50/100mg, 6 x 70mm (Packg of 50) Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 811-9970-50 Sorbent Tube, Silica (Spec Clean), 7X110, 50/BX Price on request 800262 Single Tube Holder Kit, 7 x 130mm [Draeger Long Term Tubes] Price on request 800170 Tube Holder Hose Barb Fitting Price on request