Color and UV absorption are two important parameters to secure quality of 
    the drinking water. The color is measured at a wavelength of 436 nm and is 
    indicating humic substances which have to be removed by means of 
    flocculation or filtration. UV absorption at 254 nm is indicating humic substances, 
    too, but detects in addition also other organic compounds as mineral oils, 
    aromats, solvents, etc. These substances normally have to be removed by 
    active carbon filtration. Generally, there is a fixed relation 
    between the UV absorption value and the DOC value. So continuous UV 
    absorption measurement may by used as a trend analysis of the DOC value.  Continuous monitoring 
    of raw water and treated water allows optimized control of the treatment 
    process and results in a constant quality of the drinking water.
    The new absorptiometer ColorPlus from SIGRIST is tailored to these 
    applications. Out of a modular system, a customer specific setup can be 
    realized, independent if in-line or bypass, color or UV absorption or a 
    combination of both, results in E/m or Hazen. The dual beam measuring method 
    and the integrated soiling compensation result in an excellent stability and 
    reliability of the measuring value. Options as turbidity compensation or measurement at up to three different 
    wavelengths complete the range of features.
    Products: ColorPlus bypass | ColorPlus in-line