Principle: Stabilize the cytoskeleton and proteins through the oxidation of potassium dichromate, glacial acetic acid enhances the permeability of the cell membrane to promote the penetration of the fixative, and formaldehyde cross-links the proteins rapidly, so as to fix the morphology and structure of eggs and oocytes efficiently, and to ensure the accuracy of the subsequent staining or microscopic observation.

Main components: potassium dichromate, glacial acetic acid, formaldehyde.