Volume MMV 7th Edition of the FLOW, LEVEL AND ENVIRONMENTAL GREENBOOK(r) has 1500 pages of the latest flow, level, and environmental products including industrial, field and laboratory instrumentation. It features a wide variety of industrial meters and controllers, portable, handheld and laboratory instruments for measuring Air, Water, Conductivity, Dissolved Oxygen, Flow, High Viscosity Liquids, Waste Water, Level, pH, Soil, Temperature, Water Analysis and Weather Monitoring parameters.