All ash or fly ash, insoluble in acids with more than normal may indicate a contamination of soil, sand, or other objects into the object, food, especially raw foods that use animals.
Ash or Ash insoluble in acid than normal may help indicate the contamination of soil, sand or other objects into the food. The staple food used to feed animals.
Total ash content or acid insoluble ash with more than usual may help to point out to การปลอมปน sandy soil or other objects into the objects. Especially the food raw material feed.