Tube Holder Kit, Quad Variable, 6 x 70mm Back Catalog number: 800231 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800165 Sorbent tube adapter nipple for Dual manifold High Flow Splitter Price on request 200114-10 Tube Holder Housing, 7-10 x 175mm, 5/8", L265 (pkg of 10) Price on request 171SC Formaldehyde 0.05-4.0 ppm Gas Detector Tube, pk/10 Price on request