Reference
Method
Test
Reagent #
Reagent Name
EPA
Spectrophotometric, DPD
Chlorine, Total Residual
5.1
Phosphate Buffer Solution
EPA
Titrimetric, DPD-FAS
Chlorine, Total Residual
5.1
Phosphate Buffer Solution
APHA
DPD Colorimetric Method
Chlorine (Residual)
3
Phosphate Buffer Solution
APHA
DPD Ferrous Titrimetric Method
Chlorine (Residual)
2a
Phosphate Buffer Solution
APHA
DPD Method
Chlorine Dioxide
2
Phosphate Buffer Solution