Sorbent Tube, Porapak-P, 6X110, 100/50, 50/BX Back Catalog number: 811-9982-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9969-100 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 100/BX Price on request 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request 800232 Tube Holder Kit, Deluxe (Single, Dual, Triple & Qu Price on request