Roche Cobas 6000
Roche · Model Cobas 6000
Improved efficiency Cobas 6000 analyzer series can consolidate more than 95% of the routine workload of clinical chemistry and immunochemistry testing. Greater flexibility Cobas 6000 analyzer series is tailor-made based on an individualized workflow analysis of the laboratory. Through on-site upgrades of up to 3 modules in 7 different combinations, its modular design can grow with the laboratory, securing the investment in the future. Improved safety Data management capabilities via internet link, such as full traceability of work area internal processes, full system data backup, direct access to latest updates of application information for reagents, calibrators and controls and additional service options supports the evolving standard of good laboratory practice. e-services ensuring operational convenience and safety for around the clock operation. More convenience The unique concept of the Cobas c pack and the Cobas e pack with a large variety of ready-to-use reagents allows convenient reagent handling and in over 90% of all reagents calibration is required only once per lot.
Key tips
- ·Run QC controls before trusting any repair - an analyzer that passes self-test can still report clinically wrong results.
- ·Rule out a reagent lot change before opening the instrument - it can look exactly like a hardware fault.
- ·Centrifuge rotors have a hard retirement age/cycle limit regardless of visible condition - don't eyeball it.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Assay / QC failure across a channel or the whole system
HighSymptoms: Controls out of range, calibration fails, flagged results, drift over a shift.
Root cause: Reagent or cuvette issue, lamp ageing, a probe / mixer / wash-station fault, or ISE-module problems.
Sample / reagent probe clog or crash
MediumSymptoms: Short aspiration, no dispense, clot detection, probe-position error.
Root cause: Clogged or bent probe, or a clot in the sample.
Cuvette / reaction-rotor fault
MediumSymptoms: High cuvette blanks, non-uniform results by position, rotor-drive error.
Root cause: Worn / scratched cuvettes or a wash fault, or a rotor-drive fault.
ISE module fault (Na / K / Cl)
MediumSymptoms: Electrolyte results biased or noisy, ISE calibration fails.
Root cause: Aged ISE electrodes / reference, or a pinch-valve / tubing fault.
Water / vacuum / pressure system fault
MediumSymptoms: Multiple station alarms, priming failures, poor wash.
Root cause: Water / DI supply quality, a pump, or a vacuum / pressure regulator.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Sample / reagent probes
Class Periodic replacementRel. cost $$R&R Moderate
Photometer lamp
Class Frequent wear itemRel. cost $$R&R Moderate
Reaction cuvettes / segment
Class Frequent wear itemRel. cost $$R&R Easy
ISE electrodes (Na / K / Cl) & reference
Class Frequent wear itemRel. cost $$R&R Fairly easy
Peristaltic / pinch-valve tubing
Class Frequent wear itemRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Sample / reagent probes | Periodic replacement | $$ | Moderate |
| Photometer lamp | Frequent wear item | $$ | Moderate |
| Reaction cuvettes / segment | Frequent wear item | $$ | Easy |
| ISE electrodes (Na / K / Cl) & reference | Frequent wear item | $$ | Fairly easy |
| Peristaltic / pinch-valve tubing | Frequent wear item | $ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily QC controls run and reviewed
- ·Calibration verification per assay
- ·Routine cleaning and decontamination
- ·Scheduled reagent-path and pump-tubing maintenance
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: QC / calibration failure across a channel or the whole system
- Run fresh controls at all levels and note which analytes fail.
- Confirm reagents are in date, correctly loaded, mixed and not bubbled.
- Run the photometer / lamp-energy check and replace the lamp if energy is low.
- Clean the sample and reagent probes, the mixers and the wash / cuvette-wash stations.
- Recalibrate the affected assay / ISE module and re-run QC.
Symptom: Sample or reagent probe clog / crash / short aspiration
- Inspect the probe for a bend or blockage and clear it (wire / sonicate per the manual).
- Run the fluidics prime and the probe-wash cycle.
- Check for a clot or fibrin in the sample and the liquid-level sensing.
- Verify probe positioning / alignment.
- Replace the probe if aspiration is still short.
Symptom: ISE electrolyte results biased or noisy / ISE calibration fails
- Run the ISE calibration and check the slope / drift against spec.
- Replace an ISE electrode or the reference that is at end of life.
- Check the ISE pinch valves and tubing for wear or air.
- Confirm the ISE standard packs are in date.
- Re-run ISE QC before releasing electrolyte results.
Symptom: High cuvette blanks / position-dependent results
- Run the cuvette blank / photometric check.
- Clean or replace worn / scratched cuvettes or the reaction segment.
- Check the cuvette-wash station nozzles and drying.
- Confirm the water / DI supply quality.
- Recalibrate and re-run QC.
Technical Specs
- Height
- 130 cm
- Sample Capacity
- 150 Samples/ 30 racks on 2 trays
- Throughput
- 600 samples/hr
- Length
- 98 cm
- Weight
- 425 - 1,000 KG
- Sample Volume
- 1 to 35 µL
- Width
- 1850 - 4,250 cm
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central / core laboratory
- Point-of-care testing stations
- Blood bank
- Microbiology lab
Documents & Manuals
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
Quality issue with high pressure solenoid valves may cause inaccurate results.
- RECALL
A warning is being added to the cobas 6000 MODULAR Series System - c501 and the cobas 8000 MODULAR Analyzer Series - c502 Operator Manuals to prevent operator injury during maintenance.
- RECALL
Roche has confirmed that a possible sample mismatch issue may occur on the MODULAR ANALYTICS E 170 module, cobas e 601 analyzer, or cobas e 602 analyzer due to a software limitation.
- RECALL
Due to a design change in 2015, corrosion on the sample probe electrical contacts can occur and lead to a disturbance of the sample liquid level detection (LLD). When disturbance of the sample liquid level detection (LLD) occurs, the affected sample probe may dip into the sample material deeper than intended. This may lead to carryover and medical risk cannot be excluded.
- RECALL
Some data alarm flags do not transfer from the analyzer to the laboratory information system, since not all data flags are recognized by the instrument manager/middleware.
- RECALL
Incorrect results: CRP assays may be calculated using incorrect calibration parameters which could result in falsely high or falsely low patient results being reported.
Related calculators
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