Formaldehyde 0.05-4.0 ppm Gas Detector Tube, pk/10 Back Catalog number: 171SC Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200505 Tubing, 1/8" ID x 1/16" W, Clear PVC, (3 ft) Price on request 200112-10 Tube Holder Housing, 7-10 x 150mm, 5/8", L255 (pkg of 10) Price on request 800071 Tube Holder Housing End, 5/8", for 1/4" OD, Open End Price on request