Hach DR2400 - Page 362

Lead
Lead
Page 2 of 4
Lead_UniCell_Other_PAR_Eng_Ody.fm
Interferences
The ions listed in the table have been tested up to the given concentrations.
Cumulative effects and the influence of other ions have not been evaluated.
9. Touch the timer icon.
Touch
OK.
A second two-minute
reaction period will begin.
10. Install the 16-mm cell
adapter.
Note: See Section 2.6 Sample
Cell Adapters in the Instrument
Manual for adapter installation
details.
When the timer beeps,
wipe the sample vial and
place it into the cell
adapter.
11. Touch Zero.
The display will show:
0.00 mg/L Free Pb
Underrange
12. Pipet 0.3 mL of
Masking Solution C
(HCT 152 C) into the
sample vial.
13. Close the sample vial
and invert several times
to mix.
14. Touch the timer icon.
Touch
OK.
A one-minute reaction
period will begin.
15. Wipe the sample vial
and place it into the
celladapter.
16. Touch Read.
Results will appear in
mg/L Free Pb.
Zero
Read
Interfering Substance Interference Levels
Ca
2+
, Mg
2+
, NO
3
–
, Cl
–
, PO
4
3–
, CO
3
2–
500 mg/L
F
–
, NH
4
+
, Sr
2+
50 mg/L
Ag
+
, Cd
2+
, Cr
6+
, Zn
2+
, Cu
2+
, Co
2+
, Ni
2+
25mg/L
Cr
3+
, Al
3+
, Fe
2+
, Fe
3+
10 mg/L
Mn
2+
, Hg
2+
5 mg/L
Sn
2+
0.5 mg/L