Tube Holder, Clear Storage Box Back Catalog number: 400253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800135-10 Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubi Price on request 811-9982-50 Sorbent Tube, Porapak-P, 6X110, 100/50, 50/BX Price on request 200187 Tube Holder Adapter, 3/16" to 1/4" Ends Price on request