Owner's manual
Table Of Contents
- 1 Overview
- 2 Safety instructions
- 3 Commissioning
- 4 Operation
- 4.1 Switching on or off the photometer
- 4.2 General operating principles
- 4.3 Photometer settings and system administration
- 4.4 Zero adjustment
- 4.5 Measuring in Concentration mode
- 4.5.1 Measuring cell tests with barcode
- 4.5.2 Measuring reagent tests with AutoSelector
- 4.5.3 Measuring reagent-free tests and user-defined methods
- 4.5.4 Exceeding the upper or lower limits of the measuring range
- 4.5.5 Selecting a method manually
- 4.5.6 Settings for Concentration mode
- 4.5.7 Measuring diluted samples
- 4.5.8 Sample blank value
- 4.5.9 Reagent blank value
- 4.5.10 Automatic Turbidity correction
- 4.5.11 Programming / modifying user-defined methods
- 4.5.12 The IQ LabLink procedure
- 4.6 Measuring the Absorbance / % Transmission
- 4.7 Multi wavelengths methods
- 4.8 Spectrum
- 4.9 Kinetics
- 4.10 Timer
- 4.11 Memory
- 4.11.1 Overview
- 4.11.2 Instructions on using USB memory devices
- 4.11.3 Measurement datasets
- 4.11.4 Saving measurement datasets manually
- 4.11.5 Saving measurement datasets automatically
- 4.11.6 Displaying measurement data memory
- 4.11.7 Filtering measurement datasets
- 4.11.8 Inverting filters
- 4.11.9 Erasing stored measurement datasets
- 4.12 Copying files
- 4.13 Transmitting data
- 4.14 Analytical quality assurance (AQA)
- 4.15 User management
- 4.16 Reset
- 4.17 Photometer information ([Info])
- 4.18 Lamp counter
- 4.19 Software and methods update
- 5 Maintenance and cleaning
- 6 What to do if ...
- 7 Technical data
- 8 Accessories and options
- Appendix

Operation photoLab
®
6100 VIS
130
ba75847e01 08/2009
4.14.4 AQA3/MatrixCheck
The MatrixCheck is used to check if the photometric determination is
disturbed by other substances present in the sample (sample matrix). The
MatrixCheck can be carried out by spiking or diluting:
The photometer enables a simplified MatrixCheck with the aid of the
Spectroquant
®
CombiCheck R-2 addition solution. The MatrixCheck can be
carried out immediately. The volumes required for the sample and standards
are displayed on the screen. The MatrixCheck is then carried out with a single
spiking.
For the MatrixCheck with a standard or your own, however, you can enter the
number of spikings or dilutions yourself (max. 3).
Note
Settings for AQA checks are only available for users of the user group,
administrator.
The AQA check can be carried out by any user.
MatrixCheck by
spiking
For the MatrixCheck by spiking, the photometric determination is repeated
after a defined amount of analyte has been added to the test sample in the
form of standard solutions.
The nominal value for the determination is calculated from the added amount
of analyte, provided that there is no disturbance due to the sample matrix.
After the photometric determination the measured value is compared to the
nominal value and the recovery rate is calculated. A matrix disturbance is
likely if the recovery rate is less than 90 % or more than 110 %.
MatrixCheck by
diluting
For the MatrixCheck by dilution, the photometric determination is repeated
after the test sample has been diluted with distilled water.
The nominal value for the determination is calculated from the dilution,
provided that there is no disturbance due to the sample matrix. After the
photometric determination the measured value is compared to the nominal
value and the recovery rate is calculated. A matrix disturbance is
likely if the recovery rate is less than 90 % or more than 110 %.