Hach DR2400 Manual page 370

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Manganese
5.
Add 15 drops of
Alkaline-Cyanide
Reagent Solution to each
cell. Cap and invert
gently to mix.
A cloudy solution may
form. The turbidity
should dissipate
after step 6.
Zero
9.
Touch
.
Zero
The display will show:
0.000 mg/L Mn
Interferences
Interfering Substance
Aluminum
Cadmium
Calcium
Cobalt
Copper
Iron
Lead
Magnesium
Nickel
Zinc
Manganese
Page 2 of 4
6.
Add 21 drops of PAN
Indicator Solution, 0.1%,
to each sample cell. Cap
and invert gently to mix.
An orange color will
develop in the sample if
manganese is present.
10 mL
10.
Wipe the prepared
sample and place it into
the cell holder.
20 mg/L
10 mg/L
1000 mg/L as CaCO
3
20 mg/L
50 mg/L
25 mg/L (If sample contains more than 5 mg/L iron, allow a 10-minute reaction period in step 7.)
0.5 mg/L
300 mg/L as CaCO
3
40 mg/L
15 mg/L
7.
Touch the timer icon.
Touch
.
OK
A two-minute reaction
period will begin.
Read
11.
Touch.
.
Read
Results will appear in
mg/L Mn.
Interference Levels and Treatments
10 mL
8.
When the timer
beeps, wipe the blank
and place it into the cell
holder.
Manganese_PP_Low_PAN_Eng_Ody.fm

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