Sorbent Tube, XAD-2, 6X110, 150/75, 20/BX Back Catalog number: 811-9976-20 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0920-01 Replacement Valve Caps (Pack of 2) Price on request 811-0940-01-R Inlet Filter Replacement Housing for GilAir Plus Price on request 810-0103-02 GilAir-5 Programmable (ATEX), Pump only Price on request