Pipette 5.0 ml of the
sample into a test tube.
Add to each tube 1.0 ml
of
F-1
with pipette and
mix
.
Measuring range: 0.02 – 2.00 mg/l F 50-mm semi-microcell, Cat. No. 173502
Expression of results also possible in mmol/l.
Reaction time:
1 minute
Fluoride
100822
Test
Check the pH of the
sample, specified range:
pH 1 – 10.
If required, add dilute
sodium hydroxide
solution or hydrochloric
acid drop by drop to
adjust the pH.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Quality assurance:
To check the measurement system (test reagents,
measurement device, and handling) ready-f
or-use
fluoride standard solution Certipur
®
, Cat.No. 119814,
concentration 1000 mg/l F
–
, can be used after diluting
accordingly.
Important:
For measurement in the 50-mm rectangular cell the
sample volume and the volume of the reagent m
ust be
doubled for each.
Pipette 5.0 ml of distilled
water (Water for analysis
EMSURE
®
, Cat.No.
116754, is recommend-
ed) into a second test
tube
.
(Blank)
Transfer both solutions
into a separate semi-
microcell.
Place the cell
containing
the sample
into the cell
compartment.
Place the blank cell into
the cell compartment.
Select method with
AutoSelector.
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