DR/2400
Bromine
Bromine_AVPP_Other_DPD_Eng_Ody.fm Page 1 of 4
• Analyze samples immediately. Do not preserve for later analysis.
• For more accurate results, determine a reagent blank value for each new lot of reagent. Follow the procedure using deionized
water in place of the sample. Subtract the reagent blank value from the final results or perform a reagent blank adjust
. See the
instrument manual for more information on Running a Reagent Blank.
• If the sample temporarily turns yellow after reagent addition, dilute a fresh sample and repeat the test. A slight loss of bromine
may occur because of the dilution. Multiply the result by the dilution factor. See Section 2.7 Sample Dilution on page 21.
• Wipe the outside of sample cells before each insertion into the instrument cell holder. Use a damp towel followed by a dry one to
remove fingerprints or other marks.
Bromine
Method 8016
DPD Method*
*Adapted from Standard Methods for the Examination of Water and Wastewater
Powder Pillows or AccuVac
®
Ampuls
(0.05 to 4.50 mg/L)
Scope and Application: For testing bromine residuals (including hypobromite, hypobromous acid and
bromamines) used as disinfectants in process waters, treated water, estuary water, and seawater
1. Touch
Hach Programs.
Select program
50 Bromine.
Touch
Start.
2. Fill a sample cell with
10 mL of sample.
3. Add the contents of
one DPD Total Chlorine
Powder Pillow to the
sample cell. (This is the
prepared sample.)
Swirl to mix.
A pink color will develop
if bromine is present.
4. Touch the timer icon.
Touch
OK.
A three-minute reaction
period will begin.
Perform steps 5–7 during
the reaction period.
Tips and Techniques
Powder Pillows Method 8016
Hach Programs
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