BRAND Measuring Flask 50 mL, BLAUBRAND NS 12/21, Class A, Glass Stopper, is a high-precision instrument designed for accurate volume measurement in laboratory settings. BRAND BLAUBRAND NS 12/21 glass provides excellent clarity and chemical resistance, ensuring long-term durability and precise measurements. The Class A calibration ensures the highest level of accuracy, and the glass stopper helps in safely storing the measured liquid. This set includes 2 flasks, ideal for laboratory applications requiring precise volume measurements.