Millipore Spectroquant Multy Operating Manual page 115

Determination of readily liberated cyanide
Measuring range: 10 – 350 µg/l CN
Check the pH of the Pipette 10 ml of the
sample, specified range: sample into an empty
pH 4.5 – 8.0. 16-mm 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- Reaction time:
ously to dissolve the 10 minutes
solid substance. Press Enter to start
the countdown.
Release 08/2014 - Spectroquant
Cyanide
16-mm cell
Add 1 dose of CN-1K
using the green dose-
metering cap, close with
the screw cap.
Select method 1 9 0 .
Fill approx. 10 ml of
distilled water into an
empty 16-mm cell (do
not add any reagents!),
close with the screw
cap.
(Blank cell)
®
Multy
Heat the cell in the
thermoreactor at 120 °C
(100 °C) for 30 minutes.
Pipette 5.0 ml of the
pretreated sample
into a reaction cell,
close with the screw cap,
and dissolve the solid
substance.
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 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.
114561
Cell Test
Remove the cell from
the thermoreactor and
place in a test-tube
rack to cool to room
temperature.
Add 1 level blue micro-
spoon of CN-3K, close
with the screw cap.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .