86
8.23. FLUORIDE LOW RANGE
SPECIFICATIONS
Range
0.00 to 2.00 mg/L (as F
‑
)
Resolution
0.01 mg/L
Accuracy
±0.03 mg/L ±3% of reading at 25 °C
Light Source
LED with narrow band interference filter @ 575 nm
Method
Adaptation of the Standard Methods for the Examination of Water and
Wastewater, 18th edition, SPADNS method.
REQUIRED REAGENT
Code
Description Quantity
HI93729‑0
Fluoride Low Range Reagent
4 mL
REAGENT SETS
HI93729‑01
Reagents for 100 tests
HI93729‑03
Reagents for 300 tests
For other accessories see page 200.
MEASUREMENT PROCEDURE
• Select the
Fluoride LR
method using the procedure
described in the Method Selection section (see page 18).
• Add 2 mL of
HI93729‑0
Fluoride Low Range Reagent to
two cuvettes.
• Use a plastic pipette to fill the cuvette to the 10 mL
mark with deionized water (#1), replace the cap and
invert several times to mix.
• Use a plastic pipette to fill the second cuvette to
the 10 mL mark with unreacted sample (#2),
replace the cap and invert several times to mix.
• Place the first cuvette (#1) into the holder and close the lid.
# 1
10 mL
10 mL
# 1
# 2
2 mL
FLUORIDE LOW RANGE