Test Procedures
BROMINE
DPD TABLET METHOD • CODE 3643-SC
QUANTITY
CONTENTS
CODE
100
DPD #1 Instrument Grade Tablets
6903A-J
100
DPD #3 Instrument Grade Tablets
6197A-J
15 mL
Glycine Solution
6811-E
*WARNING:
Reagents marked with an * are considered to be potential health hazards. To
view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the contents
list or in the test procedures. Omit any letter that follows or precedes the four digit code
number. For example, if the code is 4450WT-H, search 4450. To obtain a printed copy,
contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
APPLICATION:
Drinking, surface, and saline waters; swimming pool water;
domestic and industrial waters and wastes.
RANGE:
0.00–9.00 ppm Bromine
MDL:
0.04 ppm
METHOD:
In buff ered sample bromine reacts with diethyl-p-phenylene
diamine (DPD) to produce a pink-red color in proportion to
the concentration of bromine present.
SAMPLE HANDLING &
PRESERVATION:
Bromine in aqueous solutions is not stable, and the bromine
content of samples or solutions, particularly weak solutions,
will rapidly decrease. Exposure to sunlight or agitation
will accelerate the reduction of bromine present in such
solutions. For best results start analysis immediately after
sampling. Samples to be analyzed for bromine cannot be
preserved or stored.
INTERFERENCE:
The only interfering substance likely to be encountered in
water is oxidized manganese. The extent of this interference
can be determined by treating a sample with sodium
arsenite to destroy the bromine present so that the degree of
interference can be estimated.
Iodine and chlorine can also interfere, but these are not
normally present unless they have been added as sanitizers.
SMART Spectro 2 Test Procedures 05.02.16
BROMINE
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