Check the pH,
specified range:
pH 4 – 10.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Pipette 10 ml of the
sample into an empty
round cell (Empty cells,
Cat.No. 114724).
Add 1 level green micro-
spoon of Ag-2, close the
cell with the screw cap.
Measuring 0.50 – 3.00 mg/l Ag 10-mm cell
range: 0.25 – 1.50 mg/l Ag 20-mm cell
Expression of results also possible in mmol/l.
Silver
114831
Test
Swirl the cell before
opening.
Reaction time:
5 minutes
Transfer the solution into
a corresponding rectan-
gular cell.
Select method with
AutoSelector.
Place the cell into the
cell compartment.
Add 2 drops of Ag-1.
Heat the cell in the
thermoreactor at
120 °C
(100 °C) for 1 hours.
Remove the cell from
the thermoreactor and
place in a test-tube rack
to cool to room tempera-
ture.
Add 3 drops of Ag-3,
close with the screw
cap, and mix.
Add 1 drop of Ag-4,
close with the screw
cap, and mix.
Add 5 drops of Ag-5,
close with the screw
cap, and mix.
Add 1.0 ml of Ag-6,
close with the screw
cap, and mix.
Check the pH of the
sample, specified range
:
pH 4– 10.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Quality assurance:
To check the measurement system (test reagents, measurement device, and handling) ready-
for-use silver standard solution Cer
tipur
®
, Cat.No. 119797, concentration 1000 mg/l Ag, can be
used after diluting accordingly.
Important:
Very high silver concentrations in the sample produce turbid solutions (measurement solution
should be clear). In such cases the sample must be diluted (plausibility chec
k).
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
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