1.GLASSWARE MEETS LABORATORY STANDARDS: The places that directly contact with the solution of the filtration apparatus is made of silicate glass, which is tough, durable and heat-resistant designed to handle boiling liquids and strong vacuums. | 2. VACUUM FILTRATION WITH WIDE APPLICATION: Vacuum filtration allows you to filter oil and water-soluble solutions without damaging or losing heat-sensitive compounds during distillation. Suitable for lab, chemical, biological analysis, environmental monitoring, industrial and scientific research. | 3. PURE SOLUTIONS: The filtering lab flask can be used to separate components or impurities in your mixtures or solutions. The filtration apparatus is built to last with tough, heat resistant borosilicate glass designed to handle boiling liquids and strong vacuums. The glass is packaged tightly and thoroughly inspected to guarantee you receive an unblemished product. | 4. MANY USES: Use the 1000mL filtering flask for chemistry experiments in the lab or school; to make e-juice, distilling, concentrate and oils; to filter essential oils and plant extracts; to make soap; and more! | 5. FAST FILTERING ACTION: The filtering and distillation kit can be used with or without a vacuum. For faster, higher volume jobs, just hook up a vacuum hose to the filtering flask and quickly pull your solution through the funnel.