Our polypropylene beakers are manufactured with high-quality and safety in mind; that is why they are chosen again and again as a standard for labs all across the country. Why do labs choose our polypropylene beakers over our competitors? They are resistant to most commonly used laboratory reagents, including a variety of strong acids, bases, and organic solvents. The beakers are transparent for clear content visibility and graduated for easily estimating volumes. For convenience, they are designed with molded-in pouring spouts, and a rolled lip, for a dripless working environment. They are also autoclavable to 121ºC ( 248ºF).