Flask, Conical (Erlenmeyer) Graduated according to capicity. This flask will come with rubber stopper so the liquid/chemical your are using not come out of it while you place the flask on table. These flasks are made of high quality 3.3 Borosilicate glass and have uniform thickness. It has graduation markings to read the approximate contents, which makes it easier to read.Flasks can be used for making solutions or for holding, containing, collecting, or sometimes volumetrically measuring chemicals, samples, solutions, etc. for chemical reactions or other processes such as mixing, heating, cooling, dissolving, precipitation, boiling (as in distillation), or analysis. These flasks can be used in laboratories at schools, offices, homes, kitchens. These flasks can also be used in storing chemicals, mixtures and kitchen seasonings or oil. They can be used over and over again. FROM LAB TO TABLE: Bring an entertaining and interactive molecular gastronomy experience to your bar or kitchen food safe, chemistry-inspired barware. Conical Flasks are ideal for showcasing miniature cocktails, mocktails, appetizers, desserts, and more.