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Chełmicka A. , Kiedryńska L.

tom Vol. 14, No. 1

195--200

Due to Poland became a member of The European Union our laws were supposed to be accommodate to the regulations of the EU. This paper verify the different units of turbidity are equal and try to find out any relations between most popular ones. This paper contains a chek test of the foliowing turbidity units: mg/dm3, NTU - Nephelometric Turbidity Units, FAU - Formazin Attenuation Units (range 0-25 mg/dm3). On the grounds of examinations it was found that the equal between that units does not exist. It was also discowered that value of 1 NTU unit respond to 0.7 mg/dm3 (K = 860 nm). It is not recommended using units of turbidity from different method of measurement (different length of the lights wave). Relations of this both units measured in similar length light wave is high enough to accept this function (Person’s coefficient R2 is bigger than 0.81).