van Gieson picrofuchsin is part of the van Gieson trichrome staining. It stains fibers of the connective tissue, such as collagen and reticular fibers.
1 g acid picrofuchsin (C.I. 75290)
100 ml distilled water
Saturated solution of picric acid
A and B solutions are mixed in 1:45 proportion. This solution can be immediately used or left for maturation during several weeks. In any case, 0.25 ml of acid chloride is sometimes added before use.
Acid fuchsin (C.I. 75290)
Picric acid saturated solution