mixture design?

Or, are you taking multiple samples from different places and looking at the variability? A more uniform blend will have lower variance.

Thanks

but i want to know if there is a recommended guidelines for statistical analysis for blend uniformity

Timothy A Ebert

The short answer is no. However, if this has regulatory implications then you will need to identify the requirements of the relevant agency from the government of the country where the product is marketed. The restrictions may be on the type of analysis or the program used to conduct the analysis.

There are many issues that will affect data quality and the appropriateness on any one statistical method. Here is one paper that raises some issues and has references for a broader review of the literature.

Article Concepts and Techniques of Pharmaceutical Powder Mixing Proc...