Triple Variable Tube Holder Kit, 6 x 70mm Back Catalog number: 800230 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200104 Tube Holder Housing, 5 x 150mm, 1/2", S255 Price on request 111U Isopropyl & Ethyl Acetate (10-1000 ppm) Gas detector tubes, pk/10 Price on request 200114 Tube Holder Housing, 7-10 x 175mm, 5/8", L265 Price on request