Sorbent Tube, Porapak-N, 6X70, 88/44, 50/BX Back Catalog number: 811-9981-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200524 Tube Holder Tubing, 3/16" ID x 1/16" W (10 ft) Price on request 7015377P Tube Tip Breaker, Package of 5 Price on request 800165-10 Sorbent tube adapter nipple for Dual manifold High Price on request