Hematoxylin acidic according to Ehrlich is a specially developed staining solution aimed at professional users in the fields of histology, cytology and pathology. It is formulated to selectively stain cell nuclei and other basophilic structures in biological specimens.

The solution is based on hematoxylin, a natural dye known for its ability to selectively stain cell nuclei and basophilic structures. The acidic environment of the Ehrlich solution is achieved by acetic acid and allows for enhanced staining and stronger binding of the dye to the biological material. Ethanol and glycerol provide optimal viscosity and stability of the staining solution, as well as improved penetration into the tissue.

The chemical reactions that occur during staining with Ehrlich's hematoxylin acidic are due to the interactions of hematoxylin and the mordants. Potassium alum, an aluminum sulfate, acts as a mordant and promotes the binding of hematoxylin to the tissue to be stained. Sodium iodate is used to oxidize the hematoxylin for stronger and more stable staining.

Hematoxylin acidic by Ehrlich is excellent for staining sectional preparations, cellular smears and cell-based studies. The solution is used in laboratories, research facilities and hospitals that require high-quality, reliable and reproducible staining for their specimens. Applications range from routine histological examination to specialized staining techniques for the study of cell structure and function.