. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. 194 Biological Stains .6- r L. 460 480 I I I I 500 520 540 560 Fig. 25. 1. PhloxineB. Spectral curves of three xanthene dyes: 2. Rose Bengal. 3. Erythrosin B. If in the manufacture of fluorescein, dichloro or tetrachloro phthalic acid is used for condensation with resorcin, a series of halogenated derivatives may be obtained differing from those just named by having halogen atoms in the phthalic acid residue of the molecule
. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. 194 Biological Stains .6- r L. 460 480 I I I I 500 520 540 560 Fig. 25. 1. PhloxineB. Spectral curves of three xanthene dyes: 2. Rose Bengal. 3. Erythrosin B. If in the manufacture of fluorescein, dichloro or tetrachloro phthalic acid is used for condensation with resorcin, a series of halogenated derivatives may be obtained differing from those just named by having halogen atoms in the phthalic acid residue of the molecule as well as in the resorcin residue. These compounds are slightly deeper in shade than the corresponding derivatives of simple phthalic acid; and they are generally regarded as being of more pleasing shade than the ordinary fluorescein dyes. The phloxines and rose bengals are the best known of these Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Conn, H. J. (Harold Joel), 1886-1975. Geneva, N. Y. , Biotech Publications
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