10% neutral buffered formalin is a general histological tissue fixative. Contains formaldehyde buffered to a neutral pH. DETAILS Use: Required for tissue/specimen fixation. For laboratory use only. Hazards: contains paraformaldehyde, chemical known to cause cancer. Handling: with care. Warning! Harmful if swallowed, inhaled or absorbed to skin. Storage: Store at room temperature Catalog#: NFB03-1G, 1 Gallon (3.8 L).