Sorbent Tube, Microlite, 8X110, 500mg, 50/BX Back Catalog number: 811-9964-50 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 200187 Tube Holder Adapter, 3/16" to 1/4" Ends Price on request 200484 Tubing, 1/4" ID x 1/16" W (3 ft), Clear Vinyl, Gil Price on request