Single Tube Holder Kit, 7-10 x 110mm Back Catalog number: 800259 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200157 U-Tube replacement for P/N 800143 Price on request 800074 Tube Holder Triple Variable Flow, only Price on request 811-9962-50 Sorbent Tube, Chromosorb-102, 8X110, 100/50, 50/BX Price on request