% Solids and % Volatile Solids Calculator
(Scroll down for formulas)

Tare weight of dish, grams
Weight of dish plus wet sample, grams
Weight of dish plus dry sample, grams
Weight of dish plus ash, grams
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Percent solids   =
Percent volatile solids  =
The calculations:

Percent solids = [(Dish plus dry sample - tare) / (Dish plus wet sample - tare)] * 100% ,
which is the same as
(dry sample weight / wet sample weight) * 100%

Percent volatile solids (i.e., percent of dry solids which are volatile) =
[(Dish plus dry sample - Dish plus ash) / (Dish plus dry sample - tare)] * 100%,
which is the same as
(weight lost on ignition) / (dry sample weight) * 100%
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This page accessed times since January 23, 1998.