State-of-the-art turbidity meters for potable water analysis are based on the nephelometric measurement principle as described in Standard Methods and adopted by the ISO standards. Turbidity is determined by the measurement of light, scattered at an angle of 90° to the incident beam.
The combustion of coal that requires emission control technologies is widely recognized as a significant environmental issue due to the potential release of hazardous and environmentally damaging pollutants. Coal-fired power plants are subject to stringent regulations of coal combustion residuals and FGD wastewater from local authorities as well as effluent limitation guidelines (ELGs) from the Environmental Protection Agency (EPA).
The Navigator 600 phosphate analyzer from ABB Instrumentation significantly cuts the cost of phosphate monitoring while improving ease of use. The new process analyzer substantially reduces the amount of reagents and maintenance generally associated with phosphate analysis.