This 50 mL measuring cylinder is manufactured from 3.3 borosilicate glass and meets Class A tolerance standards. It is fitted with an interchangeable 14/23 polypropylene stopper and features a hexagonal base for stability along with blue graduations for clear readability. Borosilicate 3.3 glass provides superior chemical durability and thermal shock resistance. The Class A designation ensures the highest level of volumetric accuracy for precise measurement in analytical and research laboratories.