Lab & Scientific Equipment

The Best Lab Distillation Flasks

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Selecting the right distillation flask is crucial for accurate and efficient laboratory work. The material, size, and design of a flask directly impact the success of your distillation process, influencing purity, yield, and safety. Investing in a quality flask ensures reliable results and protects your valuable experiments.

No. 1
QWORK 12 Pieces 100 ML Home Distillation Apparatus Set - to Making Essential Oil, Chemistry Glass Distilling...
  • High-Performance Materials: Crafted to withstand high temperatures, our distillation apparatus maintains structural integrity without deforming or breaking, ensuring long-term durability and reliability in demanding applications.
  • Exceptional Corrosion Resistance: Designed to resist chemical degradation, this set is ideal for common laboratory distillation processes and chemical education experiments.
  • Superior Thermal Stability: With a low coefficient of thermal expansion, our apparatus can handle sudden temperature changes without sustaining damage, making it perfectly suited for complex distillation processes.
  • Crystal Clear Transparency: The high clarity of our distillation apparatus allows for easy monitoring of contents and processes, facilitating precise control over your distillation operations.
  • Optimal Safety Features: Equipped with excellent electrical insulation properties, our 12-piece set enhances safety during use, preventing electrical conduction and protecting users from potential hazards.
SaleNo. 2
VEVOR Lab Distillation Kit, 3.3 Boro Lab Glassware Distillation Kit with 24, 40 Joint, 1000ml Essential Oil...
  • Large Capacity Lab Distillation Kit: Our distillation apparatus includes flasks of various capacities to meet diverse distillation needs, enhancing the professionalism and versatility of your experiments. One set satisfies multiple experimental...
  • 3.3 Borosilicate Glass: Upgraded to 3.3 borosilicate glass, our lab glassware withstands high temperatures and corrosive reagents. The low linear expansion coefficient of the glass effectively prevents product breakage due to high temperatures.
  • Standard Ground Joints: All joints are in the standard 24/40 size, allowing easy replacement of different specifications' glassware. They are sandblasted to ensure airtightness and distillation purity.
  • Versatile Applications: VEVOR's professional distillation kit covers nearly all essential tools for laboratories, homes, research centers, and educational settings. Ideal for collecting essential oils, aqueous extracts, and distilled water.
  • Professional Accessories: Equipped with accessories such as conical flasks, beakers, brushes, etc., facilitating users in collecting and processing experimental products, and providing comprehensive support. This excellent distillation and purification...
No. 3
Deschem 500ml,24/40,Glass Distillation Apparatus,New Lab Glassware Kit for Essential Oils and Aqueous Extract
  • Be Made From G3.3 Borosilicate Glass
  • Annealing Point ------560℃, Linear Coefficient of Expansion------ 32×10-7/℃, Softening Point------820℃
  • 1. Plastic clip for 24/40 joint 4 Pcs
  • 2. Vacuum take-off adapter,24/40 105°bend 1 Pc
  • 3. Three Way Thermometer adapter with 24/40 joint 75°bend 1 Pc
  • 4. 200 Celsius thermometer 300mm 1 Pc
  • 5. 250ml 24/40 Round bottom flask,single neck 1 Pc
  • 6. 500ml 24/40 Round bottom flask,single neck 1 Pc
  • 7. Liebig Condenser,24/40 200mm 1 Pc
  • 8. Rubber Hose ID6mm OD9mm 2 Mete and PH Paper 1 Pc
No. 4
500ml Boiling Flask, 3.3 Boro. Glass, Flat Bottom, Heavy Wall, Distillation Receiving Apparatus, Karter...
  • [CAPACITY] - 500ml volume capacity suitable for various laboratory applications and experiments
  • [HEIGHT] - 172mm total height from base to top of neck opening
  • [DIAMETER] - 101mm outer diameter at the widest point of the flask body
  • [PREMIUM MATERIAL] - Constructed from high-quality 3.3 Borosilicate Glass for superior chemical durability and thermal resistance
  • [NECK DESIGN] - Extended neck length provides convenient handling and secure connection with laboratory equipment
  • [BOTTOM DESIGN] - Stable flat bottom base allows the flask to stand upright on laboratory benches and surfaces
  • [HEAVY DUTY] - Reusable design with excellent shock resistance engineered to ASTM E-1403 standards
No. 5
Deschem 1000ml 24/40 Glass Distillation Apparatus Vacuum Distill Kit w/500ml Erlenmeyer Flask
  • Be Made From G3.3 Borosilicate Glass
  • Annealing Point ------560℃
  • Linear Coefficient of Expansion------ 32×10-7/℃
  • Softening Point------820℃
  • Deschem Science Supply
SaleNo. 6
Chemistry Glassware Set - 32PCS Laboratory Glassware Kit with 24/40 Joint 1000ml Essential Oil Lab...
  • 【32PCS LAB GLASSWARE KIT】Included 1-neck round bottom flask(1000 ml), 2-neck round bottom flask (250 ml/1000 ml), 3-neck round bottom flask(500 ml), separator funnel with PTFE stopcock(250 ml), thermometer, Vigreux distillation column, Liebig...
  • 【SUPERIOR QUALITY】All glassware is made of upgraded 3.3 borosilicate glass material (GG-17) with good thermal stability, and the glass's thermal expansion coefficient is extremely low, making it suitable for severe temperature changes.
  • 【STANDARD SIZE】The laboratory equipment with 24/40 standard joints and frosted for high air-sealed and no air leakage, ensuring distillation purity.
  • 【DURABLE & REUSABLE】The glassware set can be heated directly in an open fire and can withstand typical laboratory thermal changes in chemical processes such as heating and cooling, making them durable and reusable for your experiments.
  • 【WIDELY USE】The chemistry distillation set includes 32 essential devices that are perfect for distillation, purification, and synthesis, making it an excellent kit for any chemistry experiment. and Also Can DIY the essential oil whatever you like.
No. 7
QWORK Glass 500ml Single Neck Flat Bottom Boiling Flask, with 24/40 Standard Joint, 2 Pack Heavy Wall...
  • STABLE FLAT BOTTOM DESIGN: Features a flat base that allows the flask to stand upright on any level surface without the need for additional support stands, providing stability during distillation.
  • HEAVY DUTY WALL CONSTRUCTION: Crafted from borosilicate glass with uniform wall thickness to withstand repeated heating cycles; annealed at 800°C for structural integrity and thermal resistance.
  • STANDARD 24/40 TAPER JOINT: Designed with a precision-ground 24/40 female joint for a secure, leak-free connection with condensers, Soxhlet extractors, or other 24/40 male joint laboratory apparatus.
  • VERSATILE LABORATORY UTILITY: Ideal for use as a receiving flask or boiling vessel in distillation setups, organic synthesis, solvent recovery, and mixing in academic or research environments.
  • 500ML CAPACITY SPECIFICATIONS: Compatible with open flames and heating mantles; 2 Pack flat bottom boiling flask 500mL
No. 8
QWORK Glass 500ml Single Neck Flat Bottom Boiling Flask, with 24/40 Standard Joint, Heavy Wall Distillation...
  • Standard size: With 24/40 standard taper outer joint, 1000ml capacity.
  • Flat-bottomed flask: The flask can stand upright on a flat surface by itself, rather than on a flask holder or cork holder. Can be connected to laboratory glassware, with standard tape joints.
  • Widely used: Can be connected to a distillation adapter for collecting and measuring liquids.
  • Durable: Made of high-quality borosilicate glass, it can be directly heated in an open flame, high temperature and low temperature resistance, and can be reused.
  • Package contains: 1 Pack 500ml Single Neck Flat bottomed flask.
No. 9
QWORK Glass 250ml Single Neck Flat Bottom Boiling Flask, with 24/40 Standard Joint, Heavy Wall Distillation...
  • Standard size: With 24/40 standard taper outer joint, 1000ml capacity.
  • Flat-bottomed flask: The flask can stand upright on a flat surface by itself, rather than on a flask holder or cork holder. Can be connected to laboratory glassware, with standard tape joints.
  • Widely used: Can be connected to a distillation adapter for collecting and measuring liquids.
  • Durable: Made of high-quality borosilicate glass, it can be directly heated in an open flame, high temperature and low temperature resistance, and can be reused.
  • Package contains: 1 Pack 250ml Single Neck Flat bottomed flask.
No. 10
QWORK Lab Distillation Glass Bottle, 500ml 24/40 Chromatography Reservoir Flask, 1 Pack
  • Material: G3.3 borosilicate glass, SAFE to use.
  • Capacity: 500mL .
  • Annealing Point: 560℃.
  • Joint: 24/40 connector.

Last update on 2026-09-12 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Lab Distillation Flasks

Joint Size and Compatibility

Distillation setups often involve connecting multiple pieces of glassware, typically using ground glass joints. Ensure that the joint size of your flask is compatible with other components in your apparatus, such as condensers, adapters, and heating mantles. Standard joint sizes range from 14/20 to 24/40 and larger. Using mismatched joints can lead to leaks or instability in the setup.

Frequently Asked Questions

What is the difference between a round-bottom and a flat-bottom flask for distillation?
Round-bottom flasks are preferred for distillation because their shape allows for even heating and efficient boiling. Flat-bottom flasks can have hot spots and are more prone to cracking under rapid temperature changes.
How do I clean a distillation flask?
Rinse the flask with an appropriate solvent immediately after use. For stubborn residues, use a suitable cleaning solution, such as a detergent or acid wash, followed by thorough rinsing with distilled water. Ensure the flask is completely dry before storing.
Can I use any glass flask for distillation?
It is highly recommended to use flasks made of borosilicate glass for distillation. Standard soda-lime glass is not designed to withstand the thermal stresses and chemical exposures common in distillation processes and may break.
What does the joint size (e.g., 24/40) mean?
The joint size refers to the dimensions of the ground glass connection. The first number (e.g., 24) is the outer diameter in millimeters of the upper member's end, and the second number (e.g., 40) is the length in millimeters of the ground joint. Compatibility is key for a secure connection.
How full should I fill a distillation flask?
You should fill a distillation flask to no more than two-thirds of its total volume. This prevents bumping and splashing, ensuring a safer and more efficient distillation process.

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