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Revision of the Scheme for Extraction and Classification of Dyes from Polyacrylonitrile Fibres

The simple sequential scheme for the extraction and classification of dyes from 1-2 cm lengths of polyacrylonitrile fibres reported by Beattie et al., (JSDC, Vol. 95, 79, p. 295), is revised to avoid misclassification of some basic dyes

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