Tube Holder Quad Variable Flow, only Back Catalog number: 800075 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9982-50 Sorbent Tube, Porapak-P, 6X110, 100/50, 50/BX Price on request 800497-1 Tube Breaker Kit, Blue, LFS-113 Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request