cobas c 311 analyser

Freedom to realise your lab’s potential

cobas c 311 analyser
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First class performance

  • Over 130 assays and applications available including Direct Antiglobulin Tests (DATs), 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


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


cobas c 311

Product specifications

  • Testing capabilities

    Clinical chemistry, ISE, HbA1c (whole blood measurement)

  • Throughput

    Up to 300 tests/hr for photometry tests only


    480 tests/hr for only ISE tests

  • Samples

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

    Automated sample rerun and dilution

    Additional sample loading during operation

  • Test integrity measures

    Contact-free ultrasonic mixing

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

    Sample clot detection

  • Reagents

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

    Barcoded cobas c reagent packs

Product image for cobas® 4000 analyser series

cobas® 4000 analyser series

Freedom to realise your lab’s potential

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



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