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MSP’s NanoSilica™ Size Standards are concentrated suspensions of amorphous SiO2 particles with highly uniform size distributions, suspended in ultra-pure water (UPW). NanoSilica Size Standards are available in 26 nominal sizes ranging from 15 to 200 nm, with size distributions narrower than commercially available PSL spheres. They’re provided in 5-mL quantities in dropper-tip bottles for convenience when mixing suspensions. All NanoSilica standards come with a Certificate of Calibration and Traceability and a Safety Data Sheet with handling and disposal instructions.
Silica is the material of choice for calibrating high-sensitivity inspection systems with intense DUV light sources because they are stable under exposure to DUV radiation. PSL (polystyrene latex) absorbs DUV radiation and volatilizes, so PSL spheres shrink upon inspection.
While our NanoSilica Size Standards are well suited for use in MSP Particle Deposition Systems and other particle deposition tools, they’re also excellent for calibrating DMAs, optical (laser) particle counters and other particle instruments. With a lower refractive index than PSL, they’re more representative of real-world particles.