Pyrex 5641-25 Borosilicate Glass 25mL Volumetric Flask with Standard Taper Stopper - Class B Economy Flat Bottom (±0.06mL) - 6-Pack for Chemistry Labs, Science Experiments & Liquid Measurements

These 25mL PYREX economy flasks are designed for those that do not require the precision accuracy of our Class A capacity flasks. Capacity tolerances are twice those specified for Class A volumetric ware. The graduation line is sharp and permanent; large white block letters make inscriptions easy to read. Supplied with No. 9 standard taper glass stopper. Material: borosilicate glass code 7740. Capacity: 25mL. Flask style: volumetric. Flask shape: flat bottom. Top style: standard taper stopper. Neck style: long. Flask feature: economy. Accuracy class: Class B. Tolerance: +/-0.06mL. Standard taper stopper number: No. 9. Height: 121mm. Outer diameter: 40mm. Corning #: 5641-25.