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Determination of readily liberated cyanide
Measuring range: 5 – 200 µg/l CN
Attention: In contrast to the instructions given in the package insert the sample volume as well as the reagent volume
must be doubled.
Check the pH of the
Pipette 10 ml of the
sample, specified range:
sample into a 16-mm
pH 4.5 – 8.0.
cell.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Swirl the cell before
Add 3 drops of CN-2K,
opening.
close with the screw cap,
and mix: pretreated
sample.
Shake the cell vigor-
Add 2 level blue micro-
ously to dissolve the
spoons of CN-4, close
solid substance.
with the screw cap.
Insert the blank cell into
Insert the cell containing
the cell compartment.
the sample into the cell
Align the mark on the
compartment. Align the
cell with that on the pho-
mark on the cell with
tometer. Press Zero .
that on the photometer.
Press Test .
Release 08/2014 - Spectroquant
Cyanide
24-mm cell
Add 1 dose of CN-1
using the green dose-
metering cap, close with
the screw cap.
Select method 1 9 1 .
Shake the cell vigor-
ously to dissolve the
solid substance.
®
Multy
Heat the cell in the
thermoreactor at 120 °C
(100 °C) for 30 minutes.
Transfer the pretreated
sample into a 24-mm
cell.
Reaction time:
10 minutes
Press Enter to start
the countdown.
Quality assurance:
To check the measurement system (test reagents,meas-
urement device, and handling) ready-for-use cyanide stan-
®
dard solution Certipur
, Cat.No. 119533, concentration
–
1000 mg/l CN
, can be used after diluting accordingly.
The measurement results are expressed in µg/l.
109701
Test
Remove the cell from
the thermoreactor and
place in a test-tube
rack to cool to room
temperature.
Add 2 level green micro-
spoons of CN-3, close
with the screw cap.
Fill approx. 10 ml of
distilled water into a
24-mm cell (do not add
any reagents!), close
with the screw cap.
(Blank cell)
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