cobas® c 311 analyzer

Freedom to realize your lab’s potential

IVD For in vitro diagnostic use.
cobas c 311 analyzer
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First class performance
  • Over 130 assays and applications available, including Drug of Abuse Testing (DAT), Therapeutic Drug Monitoring (TDM), specific proteins and whole blood HbA1c1
  • Predictable turnaround time


Intelligent sample workflow 


  • 108 sample positions with continuous random access and flexible STAT priority settings1
  • Automatic determination of sample integrity  
  • Automatic sample dilution and rerun capabilities


Unique reagent concept


  • Convenient and error-free handling of cobas c packs
  • No preparation or mixing required
  • Economic usage with high stabilities and convenient kit sizes


High system reliability


  • Highly reliable system based on more than 35 years of experience
  • Comprehensive training and support from Roche organizations worldwide
  • Automated maintenance functions 
  • Low system maintenance time


cobas c 311

cobas® 4000 analyzer series

Freedom to realize your lab’s potential

The cobas® 4000 analyzer series consists of the cobas c 311 analyzer for clinical chemistry and the cobas e 411 analyzer for immunochemistry testing.



  1. cobas c 311 analyzer. Operator's manual. Roche Diagnostics International Ltd.


Ordering Information

Technical Documents


  • Testing capabilities

    Clinical chemistry, ISE, HbA1c (whole blood measurement)

  • Throughput

    Up to 300 tests/hr for photometry tests only


    450 tests/hr for only ISE tests

  • Samples

    Serum, plasma, whole blood, urine, cerebrospinal fluid (CSF), supernatant (hemolysate)

    Automated sample rerun and dilution

    Additional sample loading during operation

  • Test integrity measures

    Contact-free ultrasonic mixing

    Determination of 3 serum indices (lipemic, hemolytic, icteric)

    Sample clot detection

  • Reagents

    Up to 45 reagent positions (42 cassette positions and 3 channels for ISE)

    Barcoded cobas c reagent packs

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