Chloramine (Mono) And Free Ammonia, With Powder Pack - Orbeco SC450 Manual De Instrucciones

Methods
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10
Chloramine (Mono) and Free Ammonia
with Powder Pack and Liquid Reagent
0.04 – 4.50 mg/l Cl
0.01 – 0.50 mg/l NH
Use two clean vials (24 mm Ø) and mark one as the chloramine vial,
the other as the ammonia vial.
Fill each vial (24 mm Ø) with 10 ml of water sample. Close the
vials tightly with the caps.
a) Chloramine
Press the [Mode] key until the Chloramine Method is selected.
Place the chloramine vial in the sample chamber making sure that
the marks are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 8 seconds.
Remove the vial from the sample chamber.
Add the contents of one Monochlor F RGT Powder Pack straight
from the foil into the chloramine vial.
Close the vial tightly with the cap and swirl several times to mix the
contents (approx. 20 seconds).
Add 1 drop of Free Ammonia Reagent Solution into the
ammonia vial (Note 1).
Close the vial tightly with the cap and invert several times to mix the
contents.
Place the chloramine vial in the sample chamber making sure that
the marks are aligned.
Wait for a reaction period of 5 minutes (Note 2).
(Countdown can be activated, see page 7)
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l Monochloramine (as Cl
b) Free Ammonia
Leave the chloramine vial in the sample chamber. Press the [Mode]
key until the Ammonium Method is selected.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 8 seconds.
Remove the chloramine vial from the sample chamber.
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SC450_V1_11.2010