Glass XB Pear-Shaped Flask – 3.3 High Borosilicate Glass

Product Overview

The Xiangbo Pear-Shaped Flask (also known as an eggplant flask) is a fundamental piece of laboratory glassware designed for mixing, heating, distillation, reflux, and synthesis operations. Widely applied in food, pharmaceutical, environmental, and chemical industries, this flask is engineered for precision and durability.

Manufactured from premium 3.3 high borosilicate glass, this flask features a low coefficient of thermal expansion and excellent thermal stability, ensuring it can withstand high temperatures and harsh chemical environments. The standard ground joint guarantees a tight seal with other components, while the high transparency allows for easy monitoring of experimental progress. The pear-shaped design with a short neck facilitates easy sample retrieval and cleaning, making it an indispensable tool for modern laboratories.

Product Specifications

Detailed Size Information: 

Key Features & Advantages 

1. Premium 3.3 High Borosilicate Glass Material

Manufactured from 3.3 high borosilicate glass, this pear-shaped flask offers a low coefficient of thermal expansion, excellent thermal stability, and high resistance to extreme temperatures and chemicals. It is built to withstand the rigors of daily laboratory use without cracking.
Note: Data is manually measured, subject to slight variations.

2. Standard Ground Joint – Tight Sealing

The flask features a standard ground joint with high manufacturing precision. The frosted surface is uniform and fine, ensuring a tight fit and strong sealing performance with other standard joint components (e.g., condensers, adapters). This prevents leakage and ensures a stable reaction environment.
Joint Example: 19/26 - Inner diameter: 19mm, Height: 26mm.

3. Ergonomic Design & Craftsmanship

• Pear-Shaped Design: The short neck allows for easy sample retrieval and convenient cleaning.
• High Transparency: Allows for clear observation of the experimental process, enabling timely adjustments.
• High Concentricity: The central axis of the neck and body perfectly coincides, ensuring uniform heating of the sample.
• Smooth Inner Wall: Reduces residue and makes cleaning easier, preventing cross-contamination for subsequent experiments.

Instructions for Use

• Preparation: Select the appropriate pear-shaped flask and ensure it is clean and undamaged.
• Sampling: Add samples to the flask. The sample volume should not exceed 2/3 of the flask's capacity.
• Assembly: Install the condenser and fix it properly. Ensure the bottom of the flask fits well with the heating mantle/water bath for uniform heating.
• Heating: Place the flask in a heating mantle or water bath for heating.
• Regulation: Monitor the temperature and reaction process during heating, and make adjustments if necessary.
• Cleaning: After the experiment, turn off the heat first, then carefully remove the flask. Clean it promptly and place it in a ventilated area.

Precautions

1. Keep the ground joint clean. Wipe it with a soft cloth before use.
2. Apply a small amount of petroleum jelly or vacuum grease to the ground joint surface before use to enhance sealing.
3. When installing, align the ground joint and gently rotate to connect. Do not use excessive force or over-tighten.
4. Disassemble and clean immediately after use to avoid adhesion that makes disassembly difficult.
5. Pay attention to the relative angle when disassembling. Do not force it if there is an angle deviation, as it may cause damage.
6. Wear appropriate personal protective equipment (PPE) throughout the entire operation.

Versatile Application Scenarios

• Scientific Research & Teaching: Ideal for academic demonstrations and advanced research laboratories.
• Experimental Applications: Used in distillation, reflux, and synthesis setups.
• Chemical Industry: Suitable for mixing and reacting various chemical substances.
• Environmental Testing: Used in sample preparation and analysis for environmental monitoring.

Frequently Asked Questions

Q1: What is a pear-shaped flask used for?

A: A pear-shaped flask (eggplant flask) is primarily used for mixing, heating, distillation, reflux, and synthesis in chemical and biological laboratories. Its shape allows for efficient heating and easy sample retrieval.

Q2: What is the difference between a pear-shaped flask and a round-bottom flask?

A: A pear-shaped flask has a conical or pear-like body with a short neck, which provides a larger surface area for heating and makes it easier to retrieve samples and clean. A round-bottom flask has a spherical body, often used for uniform heating and boiling.

Q3: What material is this flask made of?

A: It is made of 3.3 high borosilicate glass, which is known for its low thermal expansion, high chemical resistance, and ability to withstand high temperatures.

Q4: How do I choose the right joint size?

A: The joint size (e.g., 19/26, 24/29) must match the joint size of your other laboratory glassware components, such as condensers or adapters. The first number indicates the inner diameter in mm, and the second number indicates the height in mm.

Q5: How should I clean the pear-shaped flask?

A: After use, disassemble and clean immediately. Use appropriate laboratory detergents and brushes. The smooth inner wall makes it easy to remove residues. Avoid using harsh abrasive cleaners that might scratch the glass.

Order Now – Enhance Your Laboratory Efficiency

Whether you are conducting scientific research, teaching, or industrial testing, the Xiangbo Pear-Shaped Flask offers the perfect combination of durability, precision, and versatility.

Order your Xiangbo Pear-Shaped Flask today! Bulk inquiries and custom configurations are welcome.