Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubing Back Catalog number: 800135 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9968-50 Sorbent Tube, Silica Gel, 8X110, 520/360, 50/BX Price on request 811-9988-10 Sorbent Tube, Chromosorb-106, 10X150, 600/300, 10/BX Price on request 200113 Tube Holder Housing, 7-10 x 110mm, 5/8", L240 Price on request