Samples and reagents are aspirated using a probe equipped to detect liquid level using capacitance. The
sample and reagents are pipetted in accordance with the validated parameters for each assay and transferred
into a cuvette where the reaction takes place. Between each sample, the probe is rinsed internally and
externally in order to eliminate any risk of contamination.
Immunoassays:
The cuvettes are transferred to the washer module where magnets hold the solid phase (magnetic particles)
whilst washing takes place.
When the reaction is over, depending on the type of the assay, the cuvette is either transferred to the
luminometer for chemiluminescence assays or kept in the carousel for enzymatic assays.
For chemiluminescence assays, trigger reagents are added to produce luminescence.
For enzymatic assays, substrate is added and the photometric changes are measured continuously by the
spectrophotometer.
When measurement is complete, cuvettes are automatically ejected into a re-usable solid waste tray.
Biochemistry assays:
Photometric changes taking place in the reaction are measured continuously by the spectrophotometer.
The analyser is connected to a computer via an Ethernet link.
The software is able to program the analyser workload and carry out the following functions:
•
Management of lots of reagents, calibrators and controls.
•
Quality controls (Levey-Jennings and Westgard).
•
Management of ancillary reagents.
•
Operator traceability.
•
Transfer of results to a centralised computer system.
•
Printing, storing and traceability of results.
Operating principle
1-2- General Overview (continued)
IDS-iSYS User Manual - Revision M1"
Operating principle 1-2
6
Software version V 14
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