The Kimax 28013 500mL Red Line Class A Volumetric Flask with Stopper is a high-quality glass flask designed for precise measurements in various laboratory settings. Made of durable borosilicate glass, this flask is suitable for use in physical, dental, medical, microbiological, and biological laboratories. With a volume of 500mL and a stopper for easy closure, this flask is a reliable and essential piece of equipment for research and experimentation. Made in the United States by the trusted brand Kimax, this volumetric flask is a valuable addition to any laboratory.