Hach DR/700 - Page 9

ix
Table 1. Conversion Factors
To convert reading from To Multiply by
mg/L PO
4
mg/L P
2
O
5
0.747
mg/L PO
4
mg/L P 0.326
PHOSPHORUS, REACTIVE, continued
81-49
7. Fill a 10-mL cell to
the 10-mL line with
sample (the blank).
8. Place the blank in
the cell holder.
Note: In bright
sunlight it may be
necessary to close the
cell compartment
cover.
9. Press: ZERO
The display will count
down to 0 Then the
display will show 0.00
mg/l, and the zero
prompt will turn off.
10. Place the
prepared sample in the
cell holder.
Note: In bright sunlight it
may be necessary to close
the cell compartment
cover.
11. Press: READ
The display will count
down to 0. Then the
display will show the
results in mg/l
phosphate (as PO
4
).
Note: To convert results to
other units, see Table 1.
Conversion
Factors
Table