Hach DR/700 Procedures Manual page 375

CHLORINE, FREE,
continued
10.
Press:
READ
The display will
count down to 0.
Then the display will
show the results in
mg/L free chlorine
(Cl )
2
Note: If the sample
temporarily turns
yellow after reagent
addition, or flashes the
upper range limit, dilute
a fresh sample and
repeat the test. A slight
loss of chlorine may
occur because of the
dilution. Multiply the
result by the
appropriate dilution
factor; see Sample
Dilution Techniques
(Section I).
52-49