Drying and ignition to constant mass

Drying and ignition to constant mass
The terms "dried to constant mass" and "ignited to constant mass" mean that two consecutive weighings do not differ by more than 0.5 mg, the second weighing following an additional period of drying or of ignition respectively appropriate to the nature and quantity of the residue. Where drying is prescribed using one of the expressions "in a desiccator" or "in vacuo", it is carried out using the conditions described under 2.2.32. Loss on drying.