Formazin Nephelometric Unit

Definition

N/A

Preferred Units: N/A

Scope Note:
DNU is measured with an infrared light source according to the ISO 7027 method (the European drinking water protocol). This includes many of the most commonly used submersible turbidimeters.

This term is used for the following terms: 
FNU
Formazine Nephelometric Unit
Turbidity Units Formazin
TU/F

Approved Date
27-Nov-2014

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