I have experience of spray drying & VSD for commercial as well as in laboratory scale.
The experience is related to antibiotic & pharmaceuticals. You can try a table top model VSD of Buchi make/ other similar makes, it is compact and controlled, will be helpful for collecting your data.
@Mr. Jai Ghosh . Thanks for your suggestions. I am doing research on this topic. WE have designed the VSD. I just wanted to know if any one have the experiences then i will share my views.
Thank you very much for your suggestions @ Ghanshyam Tandon Sir.