The solid residue remaining after a substance has been incinerated or heated to a temperature sufficient to drive off all combustible or volatile substances.

The ash content of a paper stock refers to the quantity of anorganic substances in it, which that converts to ash when burned.

Tuhkapitoisuus Askhalt Ratio of mass of residue after combustion to mass of sample (pulp/paper) before combustion

The amount of residue when a sample of paper is burned under controlled conditions so that all ignitable matter is removed.

the inorganic residue that remains after coal is burned; expressed as a percentage of the weight of the coal

The solid residue remaining after a reinforcing substance has been incinerated (or strongly heated).

The percent by weight of residue left after combustion of an oil sample (ASTM Method D 482). Determined by burning the oil and weighing the residue.

Residue left after complete combustion of paper at high temperature, generally expressed as a percentage of the original test sample and represents filler content in the paper

The quantity of anorganic substances in a paper stock that will be converted to ash when burned.