Tube Holder, Clear Storage Box Back Catalog number: 400253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9903-20 Charcoal Tube, Coconut Shell, Jumbo, 200/800mg, 10x110mm, with end caps, 20Pack Price on request 811-9973-50 Sorbent Tube, XAD-2, 8X110, 100/50, 50/BX Price on request 800064 Tube Holder Housing End, 5/8", for 7-10mm Price on request