Hach DR/850, Procedures Manual, Page: 109 / 460

109
CHLORINE, TOTAL, Ultra-High Range
(0.0–10.0 mg/L Cl
2
) Method 10070
DPD Method
USEPA accepted for reporting water and wastewater analyses
*
For testing higher levels of total chlorine (free and combined)
in drinking water, cooling water,
industrial process waters, or treated wastewater
Note: This product has not been evaluated to test for chlorine and chloramines in medical
applications in the United States.
* Procedure is equivalent to USEPA method 330.5 for wastewater and Standard Method 4500-C1-G for drinking
water.
1.
Enter the user
program number for
Chlorine, UHR.
Press:
PRGM
The display will show:
PRGM?
Note: If the chlorine is
typically less than 2.0 mg/
L, use method 8167,
program number 9.
2.
Press:
12 ENTER
The display will show
mg/L Cl
2
then: ZERO
3.
Fill the 10-mL/1-cm
cell to the 5-mL line
with sample.
4.
Place the sample cell
into the instrument.
Cover the sample cell
tightly with the
instrument cap.
Note: Place the cell into
the cell holder as
illustrated. The sample cell
tab should be at the 6
o’clock position and
completely seated in the
cell holder slot.
mL
mL
5
10
Tab
Slot