Detector Tube, Ethyl Benzene, Measuring Range 30.0 to 600 ppm, For Use With Accuro, Material Glass, Tip Break Off, Pressure Range 1013 hpa, Package Quantity 10 Dr gerTubes Detection Tubes and accuro Tube PumpsTubes have a wide diameter and well-spaced graduations that are easy to read and help provide decisive measurement results. All pump kits include pump, tube opener, spare parts kit, and Allen wrench. 3YWY6 also includes a pkg. of 10 rubber caps and a molded plastic carrying case. 3WZF2 also includes a nylon transport case.