Premium 25-2000ml Lab Separatory Funnel with PTFE Stopcock - Constant Pressure Glass Dropping Funnel for Chemical Experiments, Essential for Organic Chemistry Labs & Research (100ml Size, 24x24)

Feature:The constant pressure separatory funnel with glass piston is a kind of separatory funnel. Like other separatory funnels, it can perform liquid separation and extraction operations. Different from other separatory funnels, the constant pressure separatory funnel can keep the internal pressure constant. One is to prevent back suction, the other is to make the liquid in the funnel flow down smoothly, and the third is to reduce the influence of the increased liquid on the gas pressure. , So as to be more accurate when measuring gas volume.Note:▪ Because the products are made of glass, they are easily damaged during transportation.▪ Please don't worry, we will pack the product strictly and the damage rate of the package will be less than 2%.▪ If you find that the product you received is broken, when you open the package,Please provide us with a picture, and we will resend new item to you again for free.? For your information:1.For the defective products, we provide free replacement or immediate full refund.2.If you are not satisfied with the ordered product, or have any questions or concerns, please email us, we will reply you in time with in 24 hours!