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2000ml Volumetric Flask, Glass with Poly Stopper This quality borosilicate glass laboratory piece has been calibratedto contain a precise volume at a particular temperature. Used forprecise dilutions and preparation of standard solutions. Comes with apolypropylene plastic stopper. The elongated narrow-neck has an etchedring graduation marking which, when filled to that point, indicatesthe volume of liquid it contains at 20C. Comes in arange of sizes, containing from 25 to 2000 mL of liquid