The Pyrex 2000 mL Erlenmeyer Flask No. 4980 is a high-quality glass flask made of borosilicate glass, known for its durability and resistance to thermal shock. Manufactured by PYREX in the United States, this flask is designed for use in medical, microbiological, and biological laboratories. With a volume of 2000 mL, this flask is perfect for various laboratory experiments and procedures, making it an essential piece of labware for professionals in the healthcare and scientific industries.