This opportunity is for an advanced spectral photodetection system to be integrated into NIST’s Serial Flow Cytometer, enabling high-resolution optical measurements of biological micro and nanoparticles. The system is critical for developing multimodal cytometric tools to advance biotechnology and support Critical and Emerging Technologies. Performance of services will take place at NIST’s facilities. No specific budget amount or non-bid timeline is mentioned in the description. The system must include multichannel and multispectral capabilities for sensitive, dynamic hyperspectral fluorescence measurements.