Tube Holder Kit, Quad Variable, 6 x 70mm Back Catalog number: 800231 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800262 Single Tube Holder Kit, 7 x 130mm [Draeger Long T Price on request 811-9983-50 Sorbent Tube, Porapak-Q 6X110, 150/75, 50/BX Price on request 800230 Triple Variable Tube Holder Kit, 6 x 70mm Price on request