In an experiment called Ash analysis the P cant material is strongly heated in the presence of oxygen. The residue contains oxides carbonates of about

In an experiment called Ash analysis the P cant material is strongly heated in the presence of oxygen. The residue contains oxides carbonates of about Ten elements.
Ashing is a gravimetric analysis, in which the final (ashed) weight is compared to the original weight of the sample.
The ash content of foods can then be expressed on either a wet weight (as is) or a dry weight basis.