You can find some explanations in attachments

Thanks Ioan. A quality brief over principles of particle size analysis.

Thanks Bhavesh Panchal for you question !!

Thanks Ioan Tanţău for the material !!

Thank you very much Ioan Tanţău.

Thanks loan Ioan Tanţău

Agreed; a handy summary. This was produced by one of the manufacturers (Malvern) and others also have 'education' / explanatory pdf and links so it might be worth looking at some of the PSA analyser websites for other materials e.g., if you are looking for handy links, etc for a student practical.

Thank you for both the question and answer. I was just looking for some guidance on these topics!

D(4,3) means the ratio of the d(40) & d(30).

Its as simple as this.

what does it mean by d43 particle size of powder

D is the size percentage by weight retained.

d is the size percentage by weight passing through.