Specifications

Vigreux Column · Specifications

The following are general specifications. For custom sizes or special configurations, please contact our sales team.

1. Plain Vigreux Column

Joint Size	Effective Length (mm)	Column OD (mm)	Indentation Density	Material
Please contact us to confirm the available specifications.

2. Side-Arm Vigreux Column

Joint Size	Side-Arm Size	Effective Length (mm)	Column OD (mm)	Material
Please contact us to confirm the available specifications.

3. Jacketed Vigreux Column

Joint Size	Jacket Ports	Effective Length (mm)	Jacket OD (mm)	Material
Please contact us to confirm the available specifications.

4. Jacketed Side-Arm Vigreux Column

Joint Size	Side-Arm Size	Jacket Ports	Effective Length (mm)	Material
Please contact us to confirm the available specifications.

* Dimensions are approximate.
* Effective length is the Vigreux indentation region.
* High density indentations provide higher separation efficiency.
* Custom joint sizes, lengths, and configurations available upon request.

Configuration Selection Guide:
Plain: General fractionation, no sampling or temperature control needed.
Side-Arm: Sampling during fractionation to monitor purity.
Jacketed: Temperature control for high-boiling or low-boiling distillations; jacket ports connect to circulating bath (same as condenser).
Jacketed Side-Arm: Combined temperature control and sampling.

Product Description

The Vigreux column (fractionating column) is an essential component for precise fractionation in standard joint glassware. Its inner wall features evenly distributed downward-angled indentations that create a large surface area for vapor-liquid exchange, significantly improving separation efficiency. Compared to packed columns, the Vigreux column requires no packing material, is easy to clean, and has low pressure drop, making it the ideal choice for laboratory fractionation.

Available Configurations

Plain Vigreux Column: Standard single-wall column with Vigreux indentations for general fractionation
Side-Arm Vigreux Column: Plain column with a side-arm (standard joint) for sampling or accessory connection
Jacketed Vigreux Column: Double-wall with jacket. Jacket has inlet/outlet ports (same as condenser jacket) for circulating heating oil/water or cooling fluid.
Jacketed Side-Arm Vigreux Column: Jacketed column with side-arm for combined temperature control and sampling.

Key Features

Borosilicate Glass 3.3: ISO 3585 compliant, low expansion, thermal shock 280°C
Vigreux Indentations: Maximized vapor-liquid contact for high separation efficiency
Multiple Configurations: Plain, side-arm, jacketed, jacketed side-arm
Standard Joint: 1:10 taper, precision ground for reliable sealing
Multiple Sizes: Available in 14#, 19#, 24#, 29# joint sizes
Multiple Lengths: 100mm ~ 1000mm effective lengths
High Transparency: Easy observation of fractionation progress
Chemical Resistant: Suitable for various organic solvents
No Packing Required: Easy to clean, low pressure drop
Jacket Design: Inlet/outlet ports (same as condenser jacket) for circulating heating or cooling media

Quality Assurance

Every Vigreux column undergoes strict dimensional inspection, joint taper testing, and thermal resistance testing to ensure compliance with applicable standards.

Note: Ensure joints are clean and dry before use to prevent sticking. For jacketed models, confirm jacket connections are secure before use. Use accessories of the same joint size for optimal sealing.

Applications

Typical Applications

Precise Fractionation

Separation of close-boiling liquid mixtures

Solvent Purification

High-purity solvent distillation

Natural Product Extraction

Essential oils, fragrance fractionation

Pharmaceutical R&D

Intermediate purification, chiral separation

Education

University organic chemistry and chemical engineering teaching

Compatible Equipment

Standard joint round-bottom flasks, three-neck flasks

Distillation heads, condensers

Heating mantles, oil baths

Circulating water/oil baths (for jacketed models)

Tip: Separation efficiency increases with indentation density and column length. High density is recommended for demanding separations, longer columns for wide-boiling-range mixtures. Use accessories of the same joint size for optimal sealing.

Operation & Maintenance

User Guide

Preparation

Inspect column for cracks, chips, or scratched joints
Clean joint surfaces with a soft cloth or cotton swab
Apply a small amount of vacuum grease if joints are too tight
For jacketed models, inspect jacket ports for integrity

Installation & Connection

Connect the column to the distillation flask via the joint
Attach the distillation head or condenser to the top
Insert with gentle twisting motion, do not force
Secure the column with a clamp, ensure vertical stability
Jacketed models: Connect heating/cooling media lines, lower inlet → upper outlet

Fractionation Operation

Begin heating, slowly raise to boiling temperature
Observe vapor rise within the column
Adjust heating power, control reflux ratio (recommended 3:1 ~ 10:1)
Side-arm models: sample through side-arm to monitor fraction purity
Jacketed models: Hot water/oil for high-boiling; coolant for low-boiling
Record fraction collection volumes at each temperature range

Disassembly & Cleaning

Stop heating first, allow system to cool
Turn off heating/cooling media
Gently twist to detach the column
Clean immediately after use to prevent residue buildup
Wash joints with soft brush and detergent, avoid hard objects
Clean Vigreux indentations with a long-handled soft brush
For jacketed models, clean jacket interior thoroughly
Air dry after washing, store with soft paper between joints

Care & Notes

Show care & notes

Safety Tips

Control temperature carefully when distilling flammable solvents
For jacketed models with hot oil, ensure temperature does not exceed glass tolerance
Always work in a fume hood when handling hazardous chemicals

Do not

Do not use cracked or chipped columns for experiments