Millipore Spectroquant Multy Operating Manual page 122

Measuring range: 0.10 – 2.00 mg/l F
Check the pH of the Select method 2 2 1 .
sample, specified range:
pH 3 – 8.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Add to each cell 1 level Shake both cells vigor-
blue microspoon of F-2, ously to dissolve the
close with the screw cap. solid substance.
Important:
Very high fluoride concentrations in the sample produce
brown-colored solutions (measurement solution should be
violet) and false-low readings are yielded. In such cases
the sample must be diluted (plausibility check).
Release 08/2014 - Spectroquant
Fluoride
16-mm cell
Pipette 2.0 ml each of
F-1 into two 16-mm
cells.
Reaction time:
5 minutes
Press Enter to start
the countdown.
®
Multy
Add to one cell 5.0 ml of
the sample with pipette,
close with the screw
cap, and mix.
Insert the blank cell into
the cell compartment.
Press Zero .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) ready-for-use fluoride stan-
®
dard solution Certipur , Cat.No. 119814, concentration
–
1000 mg/l F , can be used after diluting accordingly.
114598
Test
Add to the second cell
5.0 ml of distilled water
with pipette, close with
the screw cap, and mix.
(Blank cell)
Insert the cell containing
the sample into the cell
compartment. Press
Test .