Tube Holder Dual Variable Flow, only Back Catalog number: 800073 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9976-20 Sorbent Tube, XAD-2, 6X110, 150/75, 20/BX Price on request 200115-10 Tube Holder Housing, 7 x 130mm, 5/8", L247 [Draege Price on request 811-9963-50 Sorbent Tube, Microlite, 6X70, 200mg, 50/BX Price on request