These tri-pour plastic beakers range from 50ml to 1000ml. They are unbreakable and can be used with commonly used acids, solvents and alkalis. The laboratory beakers can be autoclaved and are reusable, yet are inexpensive enough to be disposable. All six sizes are graduated in ml. features polypropylene pp three dripless pouring spouts molded graduation marks packaged 100 beakers per case