Source number
The swelling number of a fiber is a measure of its ability to swell. It indicates the factor by which the volume increases with maximum water absorption. For linseed , for example, source numbers of at least 4 are prescribed in the European Pharmacopoeia . Psyllium husks should increase their volume more than forty-fold if sufficient water is added, i.e. they have a swelling number greater than forty.
Test method
A test method common in pharmacy is described in the European Pharmacopoeia.
Individual evidence
- ↑ European Pharmacopoeia, Deutscher Apotheker Verlag Stuttgart, 6th edition, 2008, pp. 3048–3049, ISBN 978-3-7692-3962-1 .
- ^ European Pharmacopoeia , Deutscher Apotheker Verlag Stuttgart, 6th edition, 2008, pp. 321–322, ISBN 978-3-7692-3962-1 .