Millipore Spectroquant Multy Operating Manual page 129

Measuring range: 0.10– 5.00 mg/l Fe
Determination of iron(II)
Check the pH of the Select method 2 5 2 .
sample, specified range:
pH 2 – 8.
If required, add dilute
sodium hydroxide
solution or nitric acid
drop by drop to adjust
the pH.
Add 0.50 ml of Fe-2 with Reaction time:
pipette, close with the 5 minutes
screw cap, and mix. Press Enter to start
the countdown.
Determination of iron(II) + (III)
Same preparation as
discribed above. After
adding of Fe-2 continue
with Fe-3.
Add 1 dose of Fe-3
using the blue dose-
metering cap, close with
the screw cap, and
dissolve the solid sub-
stance.
Important:
For the determination of total iron a pretreatment
with Crack Set 10C, Cat.No. 114688, or Crack Set 10,
Cat.No. 114687 and thermoreactor is necessary.
Release 08/2014 - Spectroquant
Iron
Determination of iron(II) and iron(III)
16-mm cell
Fill approx. 10 ml of
distilled water into a
16-mm cell (do not add
any reagents!), close
with the screw cap.
(Blank cell)
Insert the blank cell into
the cell compartment.
Press Zero .
Reaction time:
10 minutes,
then measure.
®
Multy
Pipette 8.0 ml of the
sample into a 16-mm
cell.
Insert the cell containing
the sample into the cell
compartment. Press
Test .
Calculation of iron(III)
Result B (Fe II+III)
– Result A (Fe II)
= mg/l Fe(III)
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) we recommended to use
®
Spectroquant CombiCheck 30, Cat.No. 114677.
Ready-for-use iron standard solution Certipur
Cat.No. 119781, concentration 1000 mg/l Fe(III), can also
be used after diluting accordingly.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 30) is highly recommended.
100796
Test
Add 1 drop of Fe-1,
close with the screw
cap, and mix.
®
,