Borosil® Reagent Bottles, graduated with interchangeable flat head stoppers are chemically resistant and stable. Each bottle is mechanically strong with heavy wall thickness to withstand wet or dry sterilization. Reagents can be stored for long durations and all components are autoclavable and sterilizable. These narrow mouth reagent storage bottles have a sturdy ground neck and come standard with a durable enameled area for marking accompanied by graduations. High resistance to thermal shock up to 140°C. Complies with IS 1388 (Part II), EN ISO 4796 - 2.