It is meticulously crafted from high-quality borosilicate glass 3.3, ensuring exceptional durability and chemical resistance. Its amber coloration provides effective UV protection, making it ideal for light-sensitive substances. Designed with a white printed Class A graduation mark, this flask allows for precise volume measurements in laboratory settings. Each flask is supplied with a batch certificate, ensuring its accuracy and reliability. Equipped with an ergonomic polyethylene stopper (NS 12/21), it offers a secure seal to prevent contamination and evaporation of the contents. Calibrated to contain (IN) at a reference temperature of +20 °C, this flask is perfect for the accurate preparation and storage of standard solutions.