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
52
ba75847e01 08/2009
4.5.8 Sample blank value
By measuring and using a sample blank value, measurement errors due to
coloring and turbidity of the sample matrix can be eliminated to a large extent.
The sample blank value is a characteristic of the sample (coloration) to be
currently determined. It is determined by measuring the blank sample.
The blank sample is prepared from the sample by adding reagents to it and
is especially adapted to measurement with the test to be measured.
No chromophoric reagents, however, are added for the preparation of the
blank sample.
Note
Due to the addition of reagents the sample is diluted. This can also change
the pH value of the sample. For this reason the blank sample also has to be
diluted and the pH value adjusted accordingly.
Validity The sample blank value applies to the next measurement only.
Single and multiple
determination
The sample blank value can be determined by single or multiple
determination. With multiple determination, the sample blank value is
calculated as the median from the individual measured values.
Measuring the
sample blank value
Inserting a cell with barcode starts
a measurement.
If a cell without barcode is used:
Select the method manually
(see section 4.5.5).
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Concentration
Concentration
04/16/07 9:52
Please select method for measuring
or insert a barcoded cell
or insert AutoSelector.
Setup
Method list Last method New Method