Biebrich scarlet stain is an aqueous solution of biebrich scarlet, acid fuchsin and acetic acid. It is used in Masson’s trichrome stain to demonstrate connective tissue in paraffin sections. The other solutions required for Masson’s stain are:

• Acetic acid, 1% v/v (catalog # 308A)
• Acetic aniline blue(catalog # 410A)
• Biebrich scarlet/acid fuchsin(catalog #110A)
• Bouin’s fixative (catalog #456A)
• phosphomolybdic/phosphotungstic acid (catalog # 726A)
• Weigert’s hematoxylin A (catalog # 6201A)
• Weigert’s hematoxylin B (catalog#6206A)

The country of origin for all the reagents is the United States.