Reduction Equivalent Dose [RED]

RED is "the UV dose derived by entering the log inactivation measured during full-scale reactor testing into the UV dose-response curve that was derived through collimated beam testing. RED values are always specific to the challenge microorganism used during experimental testing and the validation test conditions for full-scale reactor testing."

Source: http://www.epa.gov/safewater/disinfection/lt2/pdfs/guide_lt2_uvguidance.pdf

Because RED is based on the actual disinfection performance of the UV system, it is the most accurate and reliable manner for sizing UV systems. RED means that the UV system delivers at least the minimum UV dose required for inactivation of the target pathogen/s. Atlantium’s sizing approach relies solely on RED in order to ensure water bio-security while the overwhelming majority of UV systems in the market are sized according to the average UV dose. You can read more about the difference between RED and average UV dose in the ‘Resource Center’ section of our website. 

 

Read more about RED and how it is connected to your site's bio-security in our UV blog.