Safe, cost-effective way to transport, store, and retrieve pathology specimens, filled with highest quality 10% Neutral Buffered Formalin or buffered Zinc Formalin. Clear polypropylene jars. Bio-Tite* closure system lids are dual-threaded to minimize leakage. Our 10% NBF is designed to enhance cellular staining qualities and improves cell wall rigidity, resulting in firmer cutting and better results. Buffered Zinc Formalin is non-precipitating, chloride and sulfate free. Excellent replacement for Mercury based fixatives, working solution, MERCURY FREE. For disposal use Scigen Neutralex Catalog No. 4047