Tube Holder Kit, Quad Variable, 6 x 70mm Back Catalog number: 800231 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9973-50 Sorbent Tube, XAD-2, 8X110, 100/50, 50/BX Price on request 811-9985-50 Sorbent Tube, Florisil, 6X70, 100/50, 50/BX Price on request 800138 Tube Holder Adapter for 5/8" Ends Price on request