wtw pHotoFlex, Operating Manual

Page: 45 / 111

pHotoFlex / pHotoFlex Turb Operation
45 ba75491e05 04/2009
4.5.5 Measuring the absorbance/transmission
Note
The transmission measurement is not described separately in the fol-
lowing example as it operates in exactly the same way as the absor-
bance measurement. The result of the measurement is displayed in %
Transmission.
8 Confirm the result with <START/ENTER>.
The blank value measurement is completed.
The meter is ready to measure.
or:
Discard the result with <ESC>.
Subsequently, carry out a new blank value measurement.
1 Press the <M> key (long pressure) repeatedly until the Pho-
tometry measuring mode is selected.
2 Press the <M> key (short pressure) repeatedly until the mea-
sured variable, Absorbance or % Transmission is selected.
3 Select the cell diameter with <
▲
> <
▼
> and confirm with
<START/ENTER>.
4 Select the wavelength with <
▲
> <
▼
> and confirm with
<START/ENTER>.
i
2: A5/25 MC
i
Cell = 16 mm
i
Absorbance = 0.301
i
Blank value mea-
surement
successful!
Measure blank value
Photometry \ Absorbance
i
Select cell
with
▲ ▼
16 mm 610 nm
01.02.05 15:12