BS ISO 21400:2018 specifies procedures for the laboratory determination of the total elemental sulfur and the sulfate half-ester content of cellulose nanocrystals (CNCs) by inductively coupled plasma-optical emission spectroscopy and conductometric titration, respectively, including sample preparation, measurement methods and data analysis.Cross References:ISO/TS 80004-6ISO 3696ISO 14644-1ISO/TS 80004-1ISO/TS 80004-2ISO 11885:2007ISO 14720-2:2013ISO/TS 20477:2017ISO/TR 24498:2006All current amendments available at time of purchase are included with the purchase of this document.