Hach DR/700 Procedures Manual page 452

CHROMIUM, HEXAVALENT,
10.
Place the
prepared sample in
the cell holder.
Note: In bright light it
may be necessary to
close the cell
compartment cover.
Table 1. Conversion Factors
To convert results from
mg/L Cr 6+
mg/L Cr
6+
11.
Press:
READ
The display will count
down to 0. Then the
display will show the
results in mg/L
hexavalent chromium.
Note: To convert results
to other units, see Table 1.
To Multiply by
mg/L CrO 2- 2.23
4
mg/L Na CrO 3.12
2 4
55-4
continued