Specifications

Component List

All components listed below are included in this kit. Items marked Optional can be customized to suit your specific needs.

Request custom specs

Available Joint Sizes

14/20 19/22 24/40 (recommended) 29/42 Custom sizes available

* All components are supplied with matching joint sizes for full system compatibility

Component	Standard Spec	Available Joint Sizes	Upgrade Options	Qty	Link
Please contact us to confirm the available specifications.

📌 Customization Notes:
• Joint size can be selected to match your existing lab system (14/20 · 19/22 · 24/40 · 29/42)
• All optional specifications above can be freely combined with no minimum order quantity
• For special requirements (e.g., non-standard joints, custom flask shapes), please contact our technical team
• Volume discounts available for bulk orders — delivery timelines negotiable

💡 Recommended Add-Ons: Heating mantle (matched to flask size) · Anti-bumping granules · Silicone tubing (Φ8mm × 2m) · Thermometer (0–200℃ / 0–300℃) · Vacuum grease (optional)

Product Description

I. Principle of Distillation

Simple distillation consists of three core steps: vaporization, condensation, and collection. The principle is straightforward — as temperature increases, the vapor pressure of a liquid rises. When the vapor pressure of a component equals the external atmospheric pressure, the liquid boils. The temperature at which this occurs is the boiling point at that pressure. By carefully controlling the heating temperature, the lower-boiling component is preferentially vaporized, condensed, and collected, separating it from higher-boiling components.

Simple distillation works best for mixtures with large boiling point differences (typically > 80–100℃), or for purifying liquids from non-volatile impurities. If the boiling points are close, the separation efficiency drops significantly — consider switching to a fractional distillation apparatus.

II. Apparatus Components & Functions

Heat Source (Heating Mantle/Water Bath/Oil Bath) — Provides stable, controllable heat for even boiling
Distillation Flask (Round-Bottom Flask) — Holds the liquid to be distilled, withstands heating
Distillation Head — Connects flask to condenser, provides vapor pathway and thermometer port
Thermometer — Monitors vapor temperature to assess composition and purity
Straight Condenser — Cools vapor back to liquid; the core heat exchanger in the setup
Adapter (Vacuum Take-Off) — Directs condensate into the receiver, prevents back-flow
Receiver Flask (Erlenmeyer Flask) — Collects the distilled fraction
Iron Stand & Universal Clamps — Secure the entire assembly, ensuring vertical stability

III. Material & Workmanship

All glass components are manufactured from borosilicate glass 3.3. This material has a low coefficient of thermal expansion (approx. 3.3×10⁻⁶/K), offering excellent thermal shock resistance and a working range of 0–400℃. It also provides superior chemical stability — resistant to water, acids, alkalis, and organic solvents — ensuring no impurity leaching over long-term use.

All ground joints are precision-machined to the standard 1:10 taper, and are available in 14/20, 19/22, 24/40, and 29/42 sizes to suit your existing laboratory glassware system. The joint surfaces are smooth and provide excellent sealing performance under atmospheric pressure without the need for vacuum grease.

✦ How to Choose the Right Joint Size?
14/20 — Micro or semi-micro scale experiments, small sample volumes
19/22 — Small to medium-scale synthesis, common teaching lab size
24/40 — The most versatile size, broadest compatibility (recommended)
29/42 — Large-scale preparative work, high throughput

IV. Quality Standards

This apparatus is designed, manufactured, and inspected in accordance with GB/T 21298-2017 "Laboratory Glassware — Distillation Apparatus". Individual components also comply with their respective national standards:

Round-Bottom Flasks: GB/T 15725.4
Condensers: GB/T 15725.6
Erlenmeyer Flasks: GB/T 15725.3

Applications

Typical Applications

Teaching Laboratories

Undergraduate organic chemistry lab courses — students learn fundamental distillation techniques

Solvent Recovery

Recycling common lab solvents (ethanol, acetone, ethyl acetate, etc.)

Product Purification

Removing non-volatile impurities from liquid compounds or reaction products

Boiling Point Determination

Assessing purity or identifying unknown compounds by boiling point

Chemical Synthesis

Distillation-based separation of reaction products

Suitable Conditions

Boiling point difference between components should be greater than 80–100℃
For mixtures that are thermally stable under atmospheric pressure (no decomposition, no polymerization)
Not suitable for heat-sensitive materials (consider vacuum distillation) or close-boiling mixtures (consider fractional distillation)

Parameter	Recommended Value
Please contact us to confirm the available specifications.

Operation & Maintenance

User Guide

The following is the standard operating procedure for the simple distillation apparatus. All steps are independent of joint size and apply to 14/20, 19/22, 24/40, and 29/42 configurations.

I. Safety Check & Preparation

Inspect all glass components for cracks, chips, or damaged ground joints
Work in a fume hood — wear lab coat, safety goggles, and heat-resistant gloves
Confirm the heating device (heating mantle or water/oil bath) is functioning properly
Prepare cooling water source (tap or recirculating chiller) with adequate flow

Standard assembly sequence (bottom to top, left to right)

Secure the distillation flask on the iron stand using a universal clamp at the correct height
Carefully pour the liquid to be distilled into the flask using a funnel — fill to 1/3 to 2/3 of flask capacity
Add 2–3 boiling stones or anti-bumping granules to prevent bumping
Attach the distillation head to the flask — ensure the ground joint is properly seated (all components use matching joint sizes)
Insert the thermometer into the adapter — position the bulb just below the side arm junction of the distillation head
Connect the straight condenser to the side arm of the distillation head
Attach the adapter to the lower end of the condenser, and place the receiver flask underneath
Secure the condenser with a second universal clamp — ensure the entire apparatus is vertical and level
Verify all ground joints are properly aligned and seated

III. Cooling Water

Start cooling water BEFORE heating. Ensure the condenser jacket is completely filled with water — no air bubbles
Follow the bottom-in, top-out principle — water enters at the lower port and exits from the upper port
Water flow should be moderate — steady and bubble-free, not overly turbulent

IV. Heating & Distillation

Use a heating mantle or water/oil bath — NEVER use an open flame with flammable solvents
Gradually increase the heating temperature and observe the liquid begin to boil
Adjust the heating rate so the distillate drops at a steady rate of approximately 1 drop per second
Monitor the thermometer closely — record the temperature when the first drop of distillate appears (initial boiling point)
A stable boiling point during distillation indicates a pure fraction; if the temperature rises continuously, the composition is changing
If needed, switch receiver flasks to collect different temperature fractions
Record the volume and temperature range of each fraction collected

V. Shutdown & Disassembly

Never distill to dryness! Always leave a small residue in the flask to prevent overheating and cracking
Turn off the heat source and allow the apparatus to cool naturally
Once no more distillate is collected, turn off the cooling water
Disassemble in the reverse order (top to bottom, right to left)
Clean all glassware thoroughly, dry, and store properly

📌 Thermometer Position is Critical: If the thermometer bulb is positioned too high, readings will be low; too low, and readings will be high. The correct position is with the bulb just at the level of the side arm junction — this ensures accurate measurement of the actual vapor temperature.

💡 From a Seasoned Lab Technician: Distillation rate is not about speed — 1 drop per second is the "golden rate." Faster rates reduce separation efficiency (higher-boiling components get carried over); slower rates waste time and reduce throughput. A stable thermometer reading indicates a pure fraction; if the temperature steadily climbs, the composition is changing — switch receiver flasks or stop the distillation.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Anti-suckback

Install a suckback prevention device on the adapter. When stopping, release the vacuum before turning off the pump

Fire/Explosion Prevention

When distilling low-boiling flammable solvents (e.g., ether, acetone), NO open flame — always use a heating mantle

Ventilation

All distillation operations must be performed in a fume hood

Standard Compliance

Apparatus design complies with GB/T 21298-2017 "Laboratory Glassware — Distillation Apparatus"

Do not

Anti-bumping: NEVER add boiling stones to a hot flask! Always cool first, then add

Simple Distillation Apparatus

Specifications

Component List

Product Description

I. Principle of Distillation

II. Apparatus Components & Functions

III. Material & Workmanship

IV. Quality Standards

Applications

Teaching Laboratories

Solvent Recovery

Product Purification

Boiling Point Determination

Chemical Synthesis

User Guide

I. Safety Check & Preparation

Standard assembly sequence (bottom to top, left to right)

III. Cooling Water

IV. Heating & Distillation

V. Shutdown & Disassembly

Care & Notes

Anti-suckback

Fire/Explosion Prevention

Ventilation

Standard Compliance

Need This Apparatus Kit?

Simple Distillation Apparatus

Specifications

Component List

Product Description

I. Principle of Distillation

II. Apparatus Components & Functions

III. Material & Workmanship

IV. Quality Standards

Applications

Teaching Laboratories

Solvent Recovery

Product Purification

Boiling Point Determination

Chemical Synthesis

User Guide

I. Safety Check & Preparation

Standard assembly sequence (bottom to top, left to right)

III. Cooling Water

IV. Heating & Distillation

V. Shutdown & Disassembly

Care & Notes

Anti-suckback

Fire/Explosion Prevention

Ventilation

Standard Compliance

Related Apparatus Kits

Fractional Distillation

Vacuum Distillation

Steam Distillation

Reflux Apparatus

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