It are designed for precise measurement and mixing of liquids. Made from high-quality Borosilicate 3.3 glass, these cylinders offer excellent chemical resistance and durability. The Class B tolerance ensures accuracy in measurements, making them ideal for laboratory applications that require precise volume determination. The included PP stopper cap ensures secure closure, preventing contamination and evaporation of contents. With a 1000 ml capacity, this mixing cylinder is perfect for a wide range of laboratory experiments and processes.