cobas c 303 analytical unit

Combining photometric and ISE testing on a footprint of just 1.2 square meters.

cobas c 303 analytical unit
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cobas® pure integrated solutions

Simplicity meets Excellence

cobas® pure integrated solutions is a member of the cobas® family of systems which is designed to deliver excellence, while at the same time simplifying your daily work.



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Specifications of the reagent system

  • Reagent pack types

    cobas c pack green

  • Reagent loading / unloading


  • Reagent Identification


  • Capacity of reagent disk

    42 reagent packs

  • Reagent storage temperature

    5 – 15 °C (41 – 59 °F)

Specifications of the sampling system

  • Sampling cycle time

    8 seconds

  • Sample pipetting volume

    1.0 – 25.0 μL (0.1 μL steps)

  • Sample Liquid level detection


  • Sample clot detection


  • Sample air aspiration detection


Specifications of the reaction system

  • Number of reaction cells


  • Reaction volume

    75 – 185 μL (detectable reaction volume)

  • Incubation bath temperature

    37.0 +/- 0.1 °C

  • Reaction time

    3 – 10 min (1 min steps)

  • Mixer


Specifications of the photometric system

  • Measurements per reaction cell/10 min


  • Photometer lamp

    12 V, 50 W

  • Photometer

    Multiple wavelengths spectrophotometer

  • Maximum throughput*

    Photometric only: 450 tests/hour

    ISE only: 450 tests/hour (150 samples/hour)

    Mixed mode Photometric & ISE: 750 tests/hour (300 photometric + 450 ISE tests/hour)**

    HbA1c only: 225 tests/hour

* Throughput may differ based on the mix of test orders per sample

** The ISE unit and the c 303 photometric measuring unit share the same sample pipetter

Source: cobas® pure integrated solutions User Guide

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