Hach POCKET COLORIMETER II - Method Performance; Summary of Method; Replacement Parts (LR and HR)

1—35
Bromine, Total, HR, continued
Method Performance
Estimated Detection Limit (EDL) = 0.2 mg/L Br
2
Typical Precision (95% confidence interval) = 11.3 ± 0.5 mg/L Br
2
Summary of Method
Bromine residuals react with DPD (N,N-diethyl-p-phenylenediamine) to form a
pink color which is proportional to the total bromine concentration. The range of
analysis is extended in the high range procedure by adding additional powder to
increase the ratio of indicator to sample.
Replacement Parts (LR and HR)
Required Reagents
Description Unit Cat. No.
DPD Total Chlorine Reagent Powder Pillows............................100/pkg.....21056-69
or
DPD Total Chlorine Reagent AccuVac
®
Ampuls..........................25/pkg.....25030-25