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 800138 Tube Holder Adapter for 5/8" Ends Price on request 811-9982-50 Sorbent Tube, Porapak-P, 6X110, 100/50, 50/BX Price on request