How to calculate polydispersion index of a nanoparticle size? and does a PDI of 0.5 consider acceptable?

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John Francis Miller

Polydispersity is usually measured by an instrument such as DLS.

Whether 0.5 is acceptable depends on your application.

Mustafa Muhammed

thank you dear sir!

Xiang Cheng

The PDI of nanoparticles can usually be measured with Mastersizer, and PDI=0.5 is hard to accept, I think you can use transmission electron microscopy to verify your results.