Tube Holder, Clear Storage Box Back Catalog number: 400253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9966-50 Sorbent Tube, Silica Gel, 6X70, 100/50, 50/BX Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 119U-1-4-DIOXANE 1,4-Dioxane Gas Detector Tube for 20-500 ppm, pk/10 Price on request