Tube holder plug for manifold Back Catalog number: 800229 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9978-20 Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Price on request F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request