4
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Startup and Operation
26
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Orion 2295 Phosphate Analyzer
Thermo Scientific
Section
Section
Calibration
The user may execute manual or set automatic calibration cycles at user defined intervals. In the
auto mode the analyzer calibrates periodically and checks the validity of the calibration per the
specified tolerance for the REFERENCE slope and offset parameters. New calibration data is
only accepted if it is within the limits of the specified tolerance for the REFERENCE calibration
parameters. The current column shows the current operating parameters that are used to
calculate the sample concentration.
Cleaning
Automatic flushing of the reaction cell may be programmed.
The default setup for the analyzer uses the sample as the cleaning solution. A cleaning cycle
can be performed by pressing:
STOP
➔
MENU
➔
MEASUREMENT
➔
CLEAN
This cycle helps maintain clean reaction cell.
Post Wash
Automatic post wash cycles are typically part of every measurement cycle. At the end of the
analysis, the post wash cycle evacuates the reacted sample from the cell and cleans it to
minimize coating and residue deposits in the cell. The post wash cycle settings can be accessed
from the ANALYSIS PARAMETERS menu:
MENU
➔
SETUP
➔
(+) ANALYSIS PARAMETERS
➔
(+)
Please consult factory before modifying any of the parameters.
Priming
Priming of the instrument lines may be done as auto (all the solutions) or manually by selecting
the specific reagent or standard. Priming fills the tubing, purges the lines of air, and prepares the
analyzer for measurement mode.
The PRIME VOLUME in mL applies to all the listed solutions in the priming menu.
The Prime Volume may be specified as a (-) number; this allows the user to pump back the
reagents inside the tubing back into the reagents containers allowing for safer service when
replacement of the tubing is needed. User may select to pull back all or any one of the reagents
or standard.
NOTE:
To avoid damage and contamination to the reaction cell, use only
cleaning solutions recommended by the factory.
