ISO 10119:2020 Carbon fibre - Determination of density
standard by International Organization for Standardization, 07/01/2020
ISO 10119:2020 specifies four methods for the determination of the density of carbon fibre tested as a yarn:
method A: liquid-displacement method;
method B: sink/float method;
method C: density-gradient column method;
method D: gas pycnometer method.
Method C is the reference method in cases of dispute, etc.