M02.009 Determination of ash content of solid mineral fuels

This method describes the determination of the ash content of solid mineral fuels. A previously dried sample (see also method 02.008) is gradually heated up to 815 ±10°C in absence of air to constant weight. Charcoal and charcoal briquettes are heated up to 710 ±15°C. The ash content can be calculated from the difference of masses before and after annealing and is reported as percent of dry mass.