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 800136-10 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi Price on request 200131 Impinger Holder, Double, Aluminum, GilAir/HFS Price on request F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request