Charcoal Tube, Coconut Shell, Standard, 50/100mg, Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 800071 Tube Holder Housing End, 5/8", for 1/4" OD, Open E Price on request 811-9983-50 Sorbent Tube, Porapak-Q 6X110, 150/75, 50/BX Price on request 200524 Tube Holder Tubing, 3/16" ID x 1/16" W (10 ft) Price on request