Hach POCKET COLORIMETER II Instruction Manual page 38

Chlorine, Free and Total, HR,
7.
For free chlorine, place the
prepared sample cell in the cell
holder and cover with the
instrument cap within one
minute after adding the DPD
Free Pillow.
Proceed immediately to
step 9
.
Wipe liquid off sample
Note:
cells.
continued
8.
For total chlorine, place the
prepared sample in the cell
holder and cover with the
instrument cap. Wait three to
six minutes after adding the
DPD Total Pillows. Proceed to
step 9
.
Wipe liquid off sample
Note:
cells.
1—38
9.
Press
READ/ENTER
The instrument will show
"- - - -" followed by the
results in mg/L chlorine (Cl
.
).
2