Solid dewatered residue on a filter media after filtration. Cake washing has numerous effects on the performance of a specific process such as products. If a product is mistakenly confined in a filter cake, then moisture that reaches landfill will be detrimental to the productivity and costs of production. Ascertaining the most optimal cake washing result may not be the most effective thing to do, rather than looking for the consistency of the results. For example, it is not wise for a food company to be content in producing food with great taste 99% of the time, but with unhealthy components that can cause illnesses 1% of the time.