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21 Appendix
Recovery
The recovery rate is the measured value found divided
by the specified value (in percent).
Example: Specified value 20 mg/l; measured value
19.7 mg/l => recovery 0.985 or recovery rate 98.5%.
Reference absorbance
With this function, the basic absorbance stored in the
photometer can be replaced by an own measurement
Reference transmission
With this function, the basic transmission stored in the
photometer can be replaced by an own measurement
Spectrum
Distribution of the intensity, transmission or absor-
bance depending on the wavelength
Standard
Sample with a defined concentration of the substance
measured
Transmission
The part of the light that goes through the sample
Transponder
Small data carrier made out of synthetic material to
transmit data to the photometer contactless
Turbidity
Light damping caused by diffuse scattering at undis-
solved substances
Zero adjustment
Measuring and storing the absorbance of a cell filled
with water (basic absorbance)
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