Droplet Size by Laser Diffraction
In the early development stages of inhalation products, laser diffraction can be utilized for droplet size testing to quickly screen for products with valuable performance. However, a drawback of this method is its inability to differentiate between multiple active pharmaceutical ingredients (APIs) in a product. Therefore, in the later stages of product development, a cascade impactor must be employed to further evaluate the aerodynamic particle size distribution (APSD).
Applicable Products
