Borosil® Reagent Wide Mouth Bottles, graduated with a polypropylene screw cap and polypropylene pouring ring are great for long-term storage and are chemically resistant. Reagents can be stored for long durations and all components are autoclavable and sterilizable. These wide mouth reagent storage bottles have a pouring ring and specific GL 80 screw cap to eliminate dripping while containing or storing solutions. Every bottle comes with graduations and a durable enameled area for marking. High resistance to thermal shock up to 140°C, all components are autoclavable and sterilizable.