Millipore Spectroquant Multy Operating Manual page 196

Measuring range: 50 – 3000 mg/l volatile organic acid
(calculated as acetic acid)
Check the pH of the Select method 5 3 0 .
sample, specified range:
pH 2 – 12.
Add to the second cell Heat both cells in the
0.50 ml of distilled water thermoreactor at 100 °C
with pipette, close with for 10 minutes. Then cool
the screw cap, and mix. to room temperature
(Blank cell) under running water.
Add to each cell 5.0 ml of Reaction time:
OA-5 with pipette, close 10 minutes
with the screw cap, and Press Enter to start
mix. the countdown.
Release 08/2014 - Spectroquant
Volatile Organic Acids
Pipette 0.75 ml each of
OA-1 into two round
cells.
Add to each cell 5 drops
of OA-3.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
®
Multy
16-mm cell
Add to each cell 2 drops
of OA-2.
Add to each cell 0.50 ml
of OA-4 with pipette, clo-
se with the screw cap,
and mix.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) a standard solution must
be prepared from sodium acetate anhydrous, Cat.No.
106268 (see section "Standard solutions").
101763
Cell Test
Add to one cell 0.50 ml
of the sample with pi-
pette, close with the
screw cap, and mix.
Reaction time:
3 minutes
Press Enter to start
the countdown.