pHotoFlex
®
STD
Lists
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11/2020
Citation forms
Different forms of representing a measured concentration value that can be
derived from each other.
The method for determining phosphate provides, for example, a measured
value for phosphorous P. This measured value can also be quoted in other
citation forms such as PO4, PO4-P or P2O5.
Detection
procedure
The detection procedure designates the general principle of how a sample
is brought into a form suitable for measurement.
Different methods can be based on the same detection procedure.
LED
Light Emitting Diode
LEDs are used as the light source in the pHotoFlex
®
STD.
Measured value
The measured value is the special value of a measured parameter to be de-
termined. It is given as a combination of the numerical value and
unit (e.g. 3 m; 0.5 s; 5.2 A; 373.15 K).
Method
A method comprises a chemical detection procedure and special method
data (calibration line) that are required to evaluate the measurement re-
sults.
How to carry out the method up to the photometric measuring is described
in the analysis instructions.
The pHotoFlex
®
STD contains a database with methods (programs). Fur-
thermore, user-defined methods can be entered in the database as well.
Program
In the pHotoFlex
®
STD, methods with the relevant method data are stored
as programs.
Programs are called up via the assigned program number.
Reset
Restoring the original condition of all settings of a measuring system.
Resolution
Smallest difference between two measured values that can be displayed by
a meter.
Test set (test)
A test set contains all reagents that are required for the photometric deter-
mination of the sample according to the analysis instructions.
Zero adjustment
Adjusting a photometer with a water-filled cell.
The zero adjustment applies to measuring all measured parameters (con-
centration, absorbance, transmission) of a photometer.
