The Protein Sequencing Company™

Powering the Proteomic Era

QSI brings the groundbreaking power of single-molecule proteomics with the first-to-market Next-Generation Protein Sequencer™ to every lab, everywhere.

Detecting single amino acids through binding kinetics, the innovative Platinum® benchtop sequencer is highly sensitive to protein variants, enabling deep interrogation of proteins to deliver breakthrough insights.

Watch Our Tech in Action

All in a complete, yet compact system, with everything you need to prepare, sequence, and analyze proteins, QSI has truly redefined access to deeper proteomic insights.

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Introducing the New V3 Sequencing Kit

Bringing Advanced Protein Insights Into Focus

  • Enhanced Protein Insights: The power of our single-amino acid resolution platform is amplified with the addition of Aspartic acid (D) recognition
  • Simplified Workflow: Accelerating results with less hands-on time and AI-powered analysis tools for elevated protein insights
  • Progressive Innovation: Delivering cutting-edge tools so your research can move at the speed of reality

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Sequence the Quantum-Si Way

Discover the power of using Kinetic Signatures to sequence proteins and detect changes in the proteome.

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Unleash the Power of Proteomics

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Highlights & Applications

Learn more about how QSI is transforming proteomics research for everyone.

Talk to our Team of Experts