YSI pHotoFlex STD Colorimeter - Manual (Page 72)

Lists pHotoFlex
®
STD
72 ba76122e01 02/2013
Citation forms Different forms of representing a measured concentration value that
can be derived from each other.
The method to determine phosphate, e.g. delivers a measured value
for phosphorous P. This measured value can be alternatively quoted
in the citation forms, 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 determined. 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 is required to evaluate the mea-
surement results.
How to carry out the method up to the photometric measurement is
described in the analysis instructions.
The pHotoFlex
®
STD contains a database with methods (programs).
Furthermore, 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 dis-
played by a meter.
Test set (test) A test set contains all reagents that are required for the photometric
determination 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
(concentration, absorbance, transmission) of a photometer.