Tube holder plug for manifold Back Catalog number: 800229 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9974-50 Sorbent Tube, XAD-2, 8X110, 150/75, 50/BX Price on request 800135-10 Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubi Price on request 811-9902-20 Charcoal Tube, Coconut Shell, Large, 200/400mg, 8x Price on request