Hach DR/700 Procedures Manual page 507

FLUORIDE
For water, wastewater and seawater
SPADNS Method* (Reagent or Ampules); USEPA accepted
for reporting (distillation is required; see Section 1)**
USING SPADNS REAGENT SOLUTION
1.
Install module
57.01
in a DR/700.
Note: If samples cannot
be analyzed
immediately, see
Sampling and Storage
following these steps.
*Adapted from Standard Methods for the Examination of Water and Wastewater
**Procedure is equivalent to USEPA method 340.1 for drinking water and wastewater.
(0 to 2.0 mg/L F
2.
Press:
I/O
The display will show
575 nm
and the module
number
57.01
57-1
Method 8029
-
)
3.
After 2 seconds,
the display will show
a program number,
concentration units
and the zero prompt.
If necessary, press the
UP ARROW
the lower display
shows the program
number
57.01.1
key until