Millipore Spectroquant Multy Operating Manual page 97

Measuring range: 10 –150 mg/l COD or O
Suspend the bottom Carefully pipette 3.0 ml
sediment in two cells by of the sample into a
swirling. reaction cell, close tight-
ly with the screw cap,
and mix vigorously.
Caution, the cell
becomes very hot!
Swirl both cells after Replace both cells in the
10 minutes. rack for complete cool-
ing to room temperature.
(Very important!)
Release 08/2014 - Spectroquant
COD
Chemical Oxygen Demand
16-mm cell
2
Carefully pipette 3.0 ml
of distilled water (Water
for chromatography
LiChrosolv
115333, is recommen-
ded) into a second reac-
tion cell, close tightly with
the screw cap, and mix
vigorously.
Caution, the cell
becomes very hot!
(Blank cell)
Select method 1 6 0 .
®
Multy
Heat both cells in the
thermoreactor at 148 °C
for 2 hours.
®
, Cat.No.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) we recommended to use
®
Spectroquant CombiCheck 10, Cat.No. 114676, or the
Standard solution for photometric applications, CRM,
Cat.No. 125029.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 10) is highly recommended.
114540
Cell Test
Remove both cells from
the thermoreactor and
place in a test-tube rack
to cool.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .