Tube Holder, Clear Storage Box Back Catalog number: 400253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9971-50 Sorbent Tube, Silica (H2SO2), 6X70, 150/75, 50/BX Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request 800254 Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Price on request