OpenMNP is an open-access platform dedicated to eliminating technical barriers in microplastic identification. We provide consistent, transparent detection methods — starting with Raman spectroscopy and expanding to mass spectrometry — so that every researcher, regulator, and industry professional can identify microplastics with confidence. Together, we are advancing toward harmonized detection practices.
Have ideas about our methods? Don't hesitate to reach out.
The inaugural OpenMNP detection method is ready. Covering 8 polymer types with in-situ Raman spectra from 25°C to 800°C, it achieves 91% median matching accuracy.
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We welcome researchers worldwide to contribute new identification methods — Raman, FTIR, LDIR, Py-GC/MS, and beyond — to grow the OpenMNP ecosystem.
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Without standardized detection, microplastic data remains siloed and incomparable. OpenMNP is building the foundation for a shared, open detection standard.
Learn More →Microplastic detection today is fragmented — every lab uses different instruments, libraries, and criteria. OpenMNP is building a harmonized, open platform to change that.
When labs use a shared detection pipeline, results become truly comparable across regions and studies — a critical step toward harmonized microplastic identification.
No expensive software. No proprietary algorithms. Everything is open-source, transparent, and accessible. Upload a .txt file and get results instantly.
This Raman framework is just the beginning. More detection technologies — including mass spectrometry (Py-GC/MS) — and sample types are coming to the platform.
Currently, microplastic detection methods vary widely between laboratories — different instruments, different spectral libraries, different matching criteria. This fragmentation makes it impossible to compare results across studies or build reliable global datasets. OpenMNP exists to help change that. Our first method — an in-situ Raman framework covering 8 polymer types with a 91% median matching rate — is freely available, fully transparent, and ready for you to use. Mass spectrometry and other detection technologies will join the platform. Together, we can make microplastic identification more consistent, comparable, and accessible to everyone.
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Chinese Academy of Sciences
Institute of Process Engineering, CAS
Chinese Research Academy of Environmental Sciences
State Key Laboratory of Mesoscience and Engineering
