Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Back Catalog number: 811-9978-20 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9903-20 Charcoal Tube, Coconut Shell, Jumbo, 200/800mg, 10 Price on request 801935 Charcoal Tube, Coconut Shell, Standard, 50/100mg, Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request