Potassium
Potassium
Page 2 of 6
Potassium_PP_Other_TPB_Eng_Ody.fm
Interferences
The substances listed below have been tested and will not interfere at or below
the levels stated. If these substances are present at higher levels, conduct
interference studies at the higher levels to determine if the substance interferes.
5. Touch the timer icon.
Touch
OK.
A three-minute reaction
period will begin.
6. Pour the solution
from the cylinder into a
25-mL sample cell (this is
the prepared sample).
7. When the timer
beeps, fill the second
sample cell with 25 mL of
sample (this is the blank).
8. Wipe the blank and
place it into the cell
holder.
9. Touch Zero.
The display will show:
0.0 mg/L K
10. Within seven minutes
after the timer beeps,
wipe the prepared
sample and place it into
the cell holder.
11. Touch Read.
Results will appear in
mg/L K.
10 mL
20 mL
25 mL
10 mL
20 mL
25 mL
10 mL
20 mL
25 mL
Zero
10 mL
20 mL
25 mL
Read
Interfering Substance Interference Levels and Treatments
Ammonium Nitrogen 15 mg/L as N
Calcium 7000 mg/L as CaCO
3
Chloride 15,000 mg/L
Magnesium 6000 mg/L as CaCO
3
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