Hito Buffered 4% Paraformaldehyde (PFA) Solution is a filtered, colorless, clear, and ready-to-use fixative. PFA is widely used for cells and tissues to be histologically processed, as it effectively preserves cellular structures. Safety Note: avoid direct skin or mucous membrane contact during preparation and use.

This solution is freshly prepared from paraformaldehyde powder and phosphate buffer (pH 7.4). It retains its original quality for up to one year when stored at room temperature.