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nanoComposix (Fortis Life Sciences)
San Diego, California-based gold and silver nanoparticle manufacturer; acquired by Fortis Life Sciences (~2020); produces highly monodisperse gold nanoparticles for lateral flow assays, immunodiagnostics, and research; reference manufacturer for many gold NP characterization standards; known for ultra-uniform particle sizing critical for consistent assay performance; supplies to diagnostic kit developers and OEM test manufacturers globally
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Gold Nanoparticles (Diagnostic)
60%Silver Nanoparticles
20%Research & Custom NPs
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Origin2023
nanoComposix was founded in 2004 by two nanomaterials scientists in San Diego and established itself as the reference manufacturer for highly uniform colloidal gold and silver nanoparticles. Their gold nanoparticles are known for exceptional size uniformity (coefficient of variation <10%) which translates into consistent optical properties -- critical because diagnostic assay performance depends on predictable nanoparticle plasmon resonance wavelengths. nanoComposix gold nanoparticles are used as reference materials for characterizing competing particles, and their precise size-defined particles enable calibration of lateral flow assay sensitivity. The company was acquired by Fortis Life Sciences (a private equity-backed life science tools roll-up) around 2020. A niche San Diego startup's obsession with particle uniformity became infrastructure for global diagnostic calibration -- their reference particles verify the consistency of the nanoparticles in tests distributed worldwide.
nanoComposix (Fortis Life Sciences) ↗