To measure the mechanical properties of flies from divers, you can employ various experimental techniques. Here are a few methods commonly used to assess the mechanical properties of biological materials, such as chitin:

When choosing fly divers as a source of chitin, qualitative assessment can involve visual inspection, comparing physical characteristics such as size, color, and texture. You may also consider the environmental conditions where the flies were reared, as this can influence the properties of their exoskeletons. Additionally, obtaining flies from reliable and well-established sources or suppliers can increase the chances of obtaining high-quality chitin for qualitative purposes.