Spectroquant Pharo 300 - Page 416

Pipette 0.75 ml of OA-1
into a round cell.
Add 0.50 ml of the sam-
ple with pipette, close
with the screw cap, and
mix.
Reaction time:
1 minute
Measuring 50 – 3000 mg/l volatile organic acid (calculated as acetic acid)
range: 71 – 4401 mg/l volatile organic acid (calculated as butyric acid)
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer.
Add 1.0 ml of OA-5 with
pipette, close the cell
with the screw cap, and
shake vigorously.
Heat the cell in the ther-
moreactor at 100 °C for
15 minutes. Then cool to
room temperature under
running water.
Quality assurance:
To check the measurement system (test reagents,
measurement device, and handling) a standard solution
m
ust be prepared from sodium acetate anhydrous,
Cat.No. 106268 (see section “Standard solutions”).
Check the pH of the
sample, specified range
:
pH 2– 12.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Add 1.0 ml of OA-3 with
pipette.
Add 1.0 ml of OA-4 with
pipette, close the cell
with the screw cap, and
mix.
Volatile Organic Acids
101809
Test
Add 0.50 ml of OA-2 with
pipette.