It is crafted from high-quality clear Boro 3.3 glass, offering excellent chemical resistance and thermal durability. Designed with a trapezoidal shape, this flask ensures precise liquid measurements for high-accuracy laboratory work. It is Class A certified for superior measurement accuracy, featuring a NS 10/19 neck size and a PE stopper for secure sealing. The blue scale provides easy visibility for precise 25 mL measurements, and batch identification ensures traceability for laboratory use. This pack of 2 is ideal for laboratory, research, and educational environments where reliability and precision are paramount.