Operation
pHotoFlex
®
Turb
36
ba75976e07
09/2021
4.5.4 Blank value (reagent blank value)
A blank value is required for every concentration measurement.
For some programs (methods) for concentration measurement, the blank val-
ues are already stored in the meter. They are used automatically. For all oth-
er programs, the blank value has to be determined separately before the first
measurement.
Each stored reagent blank value can be replaced by a blank value deter-
mined by the user.
A blank value is always stored for the program that has just been called up.
It remains stored until it is erased (menu item,
Delete blank value
) or over-
written.
The
Reset
function erases all blank values measured by the user and re-
stores the blank values stored in the factory.
If a blank value measured by the user is stored for a program, this blank value
is used for measurement. The usage of the blank value measured by the user
is documented and also indicated in the measured value display.
Blank value mea-
surement
The orientation value can be very inaccurate and should not be
used as a measured value!
You will find more information on blank values in the photometry
analysis manual. A table with the programs and required blank
values is included in the analysis specifications.
Photometry
\
Concentration
----
[
BV
]
< 0.20
mg/l
83: A6/25 MC
NH4-N
16 mm
0.20 - 6.51 mg/l
01.02.05 15:12
Measurement signal cannot
be evaluated
1 Press the
<M>
key (long pressure) repeatedly until the
Photometry
measuring mode is selected.
2 Press the
<M>
key (short pressure) repeatedly until the measured
parameter,
Concentration
is selected.
3 Select a program with
<PROG>
as necessary.
