Anti freeze solution are used for long-term storage of fixed tissue sections. This cryoprotectant will preserve the structure and antigenicity of tissue. Thus, this solution is ideal for histology and immunohistochemistry laboratories without decrement in staining quality or tissue morphology. It contains the anti freeze agents and Sodium Azide in buffer solution. The buffer helps to maintain a constant pH. DETAILS Use: Required for tissue cryopotectant. Hazards: Contains Ethylene Glycol and Sodium Azide, so handle with precautions. Handling: Handle with care. Storage: Store at -20 when received Catalog#: AFS05-500N, 500 mL/ea.