The test pieces shall be weighed to an accuracy of 0,01 g, and then dried in an oven at a temperature of
103 ± 2 °C.
After 24 h, the mass shall be recorded at regular intervals of not less than 2 h. Great care shall be taken to
prevent any change in moisture content between removal from the oven and subsequent determinations of
the mass.
The drying shall be considered to be complete when the difference between the successive determinations of
the mass does not exceed 0,01 g.