Biebrich scarlet (contains ~60% dye content) , Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Ponceau BS has been used in Masson′s trichrome stain for the staining of collagen. It has also been used for eosinophil staining.
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Biebrich scarlet 70% (dye content)
Supplier: Thermo Fisher Scientific
Biebrich scarlet 70% (dye content)
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Biebrich scarlet, powder C.I. 26905
Supplier: MP Biomedicals
Soluble in water (0,1% - clear red solution) and ethanol (1 mg/ml).