I'd like to inquire about the implementation of allocation factors in inventory analysis of LCA. If the functional unit used is feedstock (measured in kg of product per kg of feedstock), should I apply an allocation factor when dealing with multiple products?

If yes, how should I handle other inputs or raw materials used in a specific process? Is it appropriate to multiply them by the allocation factor of a particular product within that specific process?

please give me an example of the calculation

Thank you