Check the pH of the
sample, specified range
:
pH 2– 12.
If required, add dilute
sulfuric acid drop by
drop to adjust the pH.
114878
Cell Test
TOC
Total Organic Carbon
Place 25 ml of the
sample into a suitable
glass vessel.
Add 3 drops of TOC-1K
and mix.
Check the pH, specified
range pH < 2.5.
Stir for 10 minutes.
Pipette 3.0 ml of stirred
sample into a reaction
cell.
Add 1 level grey micro-
spoon of
TOC-2K.
Immediately close
the cell tightly with
an aluminium cap
(Cat.No. 173500).
Heat the cell, standing
on its head, at 120 °C
in the thermoreactor for
2 hours.
Remove the cell from
the thermoreactor and
let it, standing on its
head, to cool for 1 hour.
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer.
Quality assurance:
To check the measurement system (test reagents,
measure ment device, and handling) a
TOC standard
solution Certipur
®
, Cat.No. 109017, concentration
1000 mg/l TOC, can be used after diluting accordingly.
Measuring range: 5.0 – 80.0 mg/l TOC
Removal of inorganic bound carbon (TIC):
Preparation of measurement sample:
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
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