30
• Remove the cuvette and add the content of one packet of
HI 93716-0 DPD reagent. Replace the cap and shake gently
for about 20 seconds to dissolve most of the reagent.
• Reinsert the cuvette into the instrument.
• Press
Timer
and the display will show the countdown prior to the measurement or, alternatively, wait
for 2 minutes and 30 seconds and press
Read
. When the timer ends the meter will perform the
reading.
• The instrument displays the results in
mg/L of bromine
.
INTERFERENCES
Interference may be caused by: Chlorine, Iodine, Ozone, Oxidized forms of Chromium and Manganese.
In case of water with hardness greater than 500 mg/L CaCO
3
, shake the sample for approximately
2 minutes after adding the reagent.
In case of water with alkalinity greater than 250 mg/L CaCO
3
or acidity greater than 150 mg/L CaCO
3
,
the color of the sample may develop only partially, or may rapidly fade. To resolve this, neutralize the
sample with diluted HCl or NaOH.
Bromine