Product features

Pear shape flask with three necks and standard ground mouth is a glass instrument commonly used in laboratories, usually made of high borosilicate glass. The overall shape is pear-shaped, with a thin neck, the body gradually becomes larger from top to bottom, and the bottom is round. This shape allows the liquid to be concentrated at the bottom of the flask when it is in use, which is convenient for heating and stirring. It also increases the heating area of the liquid, which is beneficial to improve the distillation efficiency and accelerate the evaporation of the solvent. The bottle mouth has a standard ground mouth interface with a variety of sizes, such as 14, 19, 24, etc. It can be tightly connected with other glass instruments with the same standard ground mouth, such as condensers, fractionating columns, separatory funnels, thermometers, etc., to ensure the sealing of the device, which is convenient for experimenters to assemble various experimental devices according to different experimental needs.There are three ground mouths, one of which is usually located at the top center of the flask, and the other two are symmetrically distributed on both sides of the bottleneck. The middle mouth is usually equipped with a stirring rod to stir the reaction solution, so that the reactants are fully mixed and the reaction rate is accelerated. It also helps to dissipate heat and prevent local overheating; one side mouth can be equipped with a separatory funnel to accurately add reactants or reagents to the flask to control the progress of the reaction and the amount of reactants; the other side mouth can be equipped with a fractionating tube, condenser or thermometer, etc., to monitor the reaction temperature, perform distillation or reflux operations, etc.

Pear shape flask with three necks has low expansion rate, high temperature resistance, acid and alkali resistance, high strength, high hardness, high transmittance, and high chemical stability; fine workmanship, smooth surface, rounded bottle body; high transparency, beautiful appearance; fine frosting on the frosted mouth and good sealing.

Product details

We can produce different flasks as per customer’s requirements.We can also print your logo on the flasks if the quantity is large,please feel free to contact us online.

Product specifications

Product applications

(1) Organic synthesis reaction: As a reaction vessel, it is suitable for various complex organic synthesis reactions. The three ground ports facilitate the installation of multiple instruments at the same time, and can accurately control conditions such as reaction temperature, reactant addition amount and reaction progress.

(2) Distillation and fractionation: It can be used for distillation and fractionation experiments, especially for distillation of small amounts of liquid. The pear-shaped design can make the evaporation and condensation of the liquid more complete during the distillation process, reduce liquid residue, and improve the purity of the fraction.

(3) Other applications: In some experiments that require gas absorption, liquid extraction, etc., the standard ground-mouth three-necked pear-shaped flask can also play a role. One mouth can be connected to a gas conduit to introduce gas for absorption reaction; the other mouth can be installed with a separatory funnel for liquid extraction; the middle mouth can be installed with a stirrer to make the reaction or extraction process more complete.