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L. Wågberg, L. Winter and T. Lindström. Determination of ion-exchanged capacity of carboxymethylated cellulose fibers using colloid and conductometric titrations. In Papermaking Raw Materials, Trans. of the VIIIth Fund. Res. Symp. Oxford, 1985, (V. Punton, ed.), pp 917–923, FRC, Manchester, 2018.


The carboxyl group content of a series of carboxymethylated pulps has been determined by a colloid titration method, by conductometric titration and by means of 14C-labelling and the values obtained by the different methods have been compared.

It is shown that, under certain experimental conditions, the colloid titration method can be used to determine the carboxyl group content of cellulose fibers.

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