Tube Holder Adapter for 1/2" Ends Back Catalog number: 800139 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9975-50 Sorbent Tube, XAD-2, 8X110, 400/200, 50/BX Price on request 200113-10 Tube Holder Housing, 7-10 x 110mm, 5/8", L240 (Pac Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request