Sentence:  A 10-g food sample was dried, then <WSD>ashed</WSD>, and analyzed for salt (NaCl) content by the Mohr titration method (AgNO<sub>3</sub> + Cl → AgCl). The weight of the dried sample was 2g, and the ashed sample weight was 0.5g. 
Meaning of the word marked with <WSD> tags:  To reduce to a residue of ash. See "ashing".