Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Back Catalog number: 800254 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9983-50 Sorbent Tube, Porapak-Q 6X110, 150/75, 50/BX Price on request 800149 Single Tube Holder Kit, 6 x 70mm (Standard Charcoa Price on request 200113-10 Tube Holder Housing, 7-10 x 110mm, 5/8", L240 (Pac Price on request