Determination of Ash
To determine ash content the plant material is burnt and the residual ash is meas-
ured as total and acid-insoluble ash. Total ash is the measure of the total amount of
material left after burning and includes ash derived from the part of the plant itself
and acid-insoluble ash. The latter is the residue obtained after boiling the total ash
with dilute hydrochloric acid, and burning the remaining insoluble matter. The
second procedure measures the amount of silica present, especially in the form of
sand and siliceous earth
To determine ash content the plant material is burnt and the residual ash is meas-
ured as total and acid-insoluble ash. Total ash is the measure of the total amount of
material left after burning and includes ash derived from the part of the plant itself
and acid-insoluble ash. The latter is the residue obtained after boiling the total ash
with dilute hydrochloric acid, and burning the remaining insoluble matter. The
second procedure measures the amount of silica present, especially in the form of
sand and siliceous earth
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