Hach DR2400 - Cell Matching Procedure

Boron
Boron
Boron_PP_Low_AZO_Eng_Ody.fm Page 3 of 6
Cell Matching Procedure
1. Rinse and fill two cells with deionized water.
2. Wipe each cell with a soft cloth or tissue.
3. Using one of the cells, set the instrument absorbance at 410 nm to zero.
4. Read the absorbance of the other cell.
5. Cells that read within 0.002 absorbance are matched.
Interferences
The following have been tested for interference and found not to interfere up to
the indicated levels (in mg/L):
13. Place the blank into
the cell holder.
14. Touch Zero.
The display will show:
0.00 mg/L B
15. Place the prepared
sample into the cell
holder.
16. Touch Read.
Results will appear in
mg/L B.
Zero
Read
Table 1 Interferences
Substance Interference Level Tested
Aluminum (
3+
)10
Benzotriazole 20
Biocides:
Carbamate-type
Isothiazolin-type
Quat-type
Thiocyanate-type
120
120
90
60
Calcium 1000 (as CaCO
3
)
Chloride 2500
Copper (
2+
)20
Magnesium 1000 (as CaCO
3
)
Manganese (
7+
)5
Molybdate (Mo
6+
)60
Phosphonates, AMP 20
Phosphonates, HEDP 20
Polyacrylates 20 (as Acumer 1000, 1100)
Polymaleic Acid 40 (as Belcene 200)