wtw PhotoLab Spektral, Operating Instructions Manual

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21 Appendix
Absorbance Logarithmic dimension for the absorption of the sam-
ple;
negative decadic logarithm of the transmission
AQA Analytical Quality Assurance
AQA I. D. Measured values are given an AQA I. D. (AQA1 or
AQA2) in the documentation, depending on which
AQA level was active when the measurement was per-
formed
AQA1 Level 1 of the Analytical Quality Assurance: Photome-
ter monitoring
AQA2 Level 2 of the Analytical Quality Assurance: Monito-
ring the total system
AutoSelector Synthetic material cylinder with barcode. It is inserted
into the round cell shaft and transmits the code for the
reagent test to the photometer
Barcode Optical code (black and white areas) of the method. It
can be read by light barriers in the photometer
Baseline Reference value for the spectrum of reference absor-
bances or reference transmissions
Blank value
(= reagent blank value)
Absorbance value received when measuring with pho-
tometrical methods using distilled water as the test
sample
Color Defined in EN ISO 7887
CombiCheck Multi-parameter standards to monitor the total system
for a method
Concentration Mass or quantity of a dissolved substance per volume,
e. g. in g/l or mol/l
Correlation coefficient Specifies the dimension of the linear relation of the
value pairs when determining the zero point and slope
for a user-defined method
Kinetics Time-resolved measurement
MemoChip Transponder (data carrier) with new method or AQA
data
Memory Card Exchangeable storage card (contains the measuring
program, instrument data and measuring data)
Method Procedure to determine the concentration of a sub-
stance contained in a sample using a photometrical
test set and a photometer
PhotoCheck standard Stable color solution with defined absorbance values
to check the photometer
PipeCheck Photometer function to find pipette errors
21.3 Glossary