Correction Value Determination - MACHEREY-NAGEL PF-12 Plus Handbuch

12.4.1 Method 901: Measurement with factor
Select the desired wavelength using
and confirm with
Return to the method selection by pressing
12.4.2 Methode 902: Measurement with standard
Select the desired wavelength using
tion via the keypad and confirm with
on the display.
Return to the method selection by pressing
12.4.3 Methode 903: Measurement of absorbance
Select the desired wavelength using
following the instructions on the display. Return to the method selection by pressing
12.4.4 Methode 905: Measurement of transmission
Select the desired wavelength using
following the instructions on the display. Return to the method selection by pressing
12.4.5 Methode 906: Measurement of nephelometric turbidity
Perform the measurement by following the instructions on the display. Return to the method
selection by pressing
12.4.6 Turbidity calibration
The turbidity calibration can be performed via this menu and is started by pressing
the other the turbidity solutions from the test kit NANOCONTROL NANOTURB (REF 925702)
are put into the photometer and measurement is started with
can be confirmed with
Loss of turbidity calibration: The turbidity calibration cannot be reset to factory settings after
it has been performed. Cancel an accidentally triggered turbidity calibration by pressing the
key.

12.5 Correction value determination

These instructions are only to be used in connection with the corresponding test instructions of
the NANOCOLOR
®
The photometric analysis of water samples with inherent color or turbidity always requires de-
termination of a correction value. Colors and turbidity cause an increased light absorption, thus
leading to deviating results. Determination of correction values require individual procedures for
every test. For example, it is not always sufficient to measure the intrinsic color of the sample
without reagents and subtract it from the measured value. In many cases, the reagents change
Manual Photometer PF-12
56
/
. Perform the measurement by following the instructions on the display.
/
. Perform the measurement by following the instructions
/
/
.
.
cuvette tests.
and confirm with
.The factor will be erased.
and confirm with
. The standard concentration will be erased
and confirm with
and confirm with
NOTICE
Plus
EN, V2.00, 08.2021
. Enter the factor via the keypad
. Enter the standard concentra-
. Perform the measurement by
. Perform the measurement by
. After the calibration is finish it
.
.
. One after