Tube Holder Single Variable Flow, only Back Catalog number: 800072 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800263 Single Tube Holder Kit, 5 x 150mm [Kitagawa TWA Tubes] Price on request 800232 Tube Holder Kit, Deluxe (Single, Dual, Triple & Quad, all sizes) Price on request 811-9971-50 Sorbent Tube, Silica (H2SO2), 6X70, 150/75, 50/BX Price on request