Single Tube Holder Kit, 5 x 150mm [Kitagawa TWA Tu Back Catalog number: 800263 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9968-50 Sorbent Tube, Silica Gel, 8X110, 520/360, 50/BX Price on request 200187 Tube Holder Adapter, 3/16" to 1/4" Ends Price on request 200104 Tube Holder Housing, 5 x 150mm, 1/2", S255 [Kitaga Price on request