Published
ISO 699:2015 specifies a method for the determination of the alkali-insoluble fraction of pulps using sodium hydroxide solution of fixed concentration. The sodium hydroxide concentrations most frequently used are 18, 10, and 5 % (m/m).
The method is applicable to all kinds of pulp.
WITHDRAWN
SRPS ISO 699:1993
PUBLISHED
SRPS ISO 699:2017
90.20
Standard under periodical review
Jan 15, 2026
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