Hach POCKET COLORIMETER II, Instruction Manual

Page: 40 / 94

1—40
Phosphonates,
continued
1.
Choose a sample
size from Table 1 . Use a
graduated cylinder or pipet
to measure the sample.
2.
Pour the sample into a
plastic 50-mL volumetric
flask. Dilute to the mark
with deionized water. Cap
and invert to mix.
Table 1
Expected
Concentration
(mg/L PO
4
)
Sample
(mL)
0-2.5 50
0-5 25
0-12.5 10
0-25 5
0-125 1