Performance Of Visocolor Eco Tests - Macherey-Nagel PF-12 Plus Manual

5.2.15 Calibration adjustment (Method 962)
The PF-12
and can be readily used without any need for user calibration. The calibra- tion
adjustment tool can be used to meet regulatory requirements. Therefore the
factory-provided calibration of the VISOCOLOR
adjusted with a standard in the menu "calibration adjustment". The parameter including
submethod to be adjusted is chosen via the four digit entry mask (e.g. 0291 for COD 1500
100–1500 mg/L). Place the tube with the zero value or the reagent blank into the cuvette slot
Plus
of the PF-12 and press
with the standard into the device and press
value for the standard with the keypad and confirm your entry with
value must be within the measurement range of the respective submethod, otherwise the
entry will not be adopted). The changed calibration will be stored automatically and will be
executed the next time the concerned method will be chosen. The changed calibration will
be indicated in form of a star behind the respective test name. When stored, the results
measured with an adjusted calibration will be indicated with a star, too. The calibration ad-
justment can be deleted and set back to factory calibration by pressing in the same menu.
The measurement values in the memory will not be affected by the reset.
We recommend to use the factory-provided calibration and not to change this one. The
calibration can be adjusted to meet regulatory requirements. For the calibration adjustment
procedure we recommend to use a standard with a value located in the upper third of the
measurement range to reduce the calibration error to a minimum.
5.3 Performance of VISOCOLOR
Instead of the VISOCOLOR
used. Zero is adjusted with a second round tube (depending on the test either an untreated
sample or a reagent blind value).
Plus
device is provided with the MACHEREY-NAGEL factory calibra- tion
to start the zero measurement. Subsequently place the tube
®
ECO measuring tube, a clean, dry 16 mm OD round tube is
Switch on the photometer
The display "Method _ _ _" appears.
A VISOCOLOR
(5 - xx)
or
using /
Perform a zero measurement
Insert the clean round tube with the blank value into the pho-
tometer and press
value.
04.07.2014
®
ECO and NANOCOLOR
to start the measurement. Enter the desired
®
ECO tests
®
ECO test can be selected via the test number
via the list.
. Remove the round tube with the blank
®
methods can be
(Note: The entered
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