21
METHOD PROCEDURE
• Add one packet of
HI93716-0
Bromine Reagent.
Replace the plastic stopper and the cap. Shake
gently for about 20 seconds to dissolve most of the
reagent.
• Insert the cuvette into the holder and ensure that
the notch on the cap is positioned securely in the
groove.
• Press
Read
and the display will show a 2 minutes and 30 second countdown prior
to the measurement. To skip the timer, press
Read
twice. When the timer ends
the meter will perform the reading. The instrument displays the results in
mg/L
of
bromine (Br
2
).
INTERFERENCES
Interference may be caused by:
• Chlorine, Iodine, Ozone, Oxidized forms of Chromium and Manganese
• Hardness greater than 500 mg/L CaCO
3
, to remove the interference shake the
sample for approximately 1 minute after adding the reagent
• Alkalinity greater than 300 mg/L CaCO
3
or acidity greater than 150 mg/L CaCO
3
,
the color of the sample may develop only partially or rapidly fade, to remove the
interference neutralize the sample with diluted HCl or NaOH