Pyrex glass offers a complete solution to all cookware requirements from prep, to baking and storing; Superior quality; all products from the Pyrex glass range have a 10 year guarantee. These beakers have precision measurements - ideal for mixing and measuring ingredients, such as flour, sugar, rice and milk. Borosilicate glass: thermal shock resistant. Hygienic material. 0.25 litre capacity, . 0.5 litre capacity, . General information: Made from glass. Dishwasher safe. Manufacturers 10 year guarantee.