Chemical Method
SPADNS
Appendix
Interferences
Persistant Interferences
1. The accuracy decreases above a level of 1.2 mg/L Fluoride Although the results are
sufficiently accurate for most applications, even more exact results can be achieved
by a 1:1 dilution of the sample before use and by the subsequent multiplication of the
result by 2.
Interference
Cl
2
Bibliography
Standard Methods 20th, 1992, APHA, AWWA, WEF 4500 F D, S. 4-82
According to
US EPA 13A
APHA Method 4500 F D
EN Method Reference Book 1.0
Fluoride L / M170
from / [mg/L]
5
EN
9