Lab Distillation Apparatus Kit- Bench-Top Molecular Distillation System

The AV-SP2L is a complete, ready-to-run 2 L glass short-path (molecular) distillation kit engineered for laboratory R&D and small-batch purification of heat-sensitive oils, extracts and fine chemicals. The kit is built around a borosilicate 3.3 short-path distillation head with a vacuum-jacketed vapor channel, a 2 L round-bottom flask heated and stirred by a 650 W magnetic-stirring heating mantle, internal condensers and a 1 L dry-ice cold trap. It ships complete with a 2XZ-2 rotary-vane vacuum pump (ultimate vacuum 0.06 Pa) and an AVDC-1010 recirculating chiller (-10 to 95 °C), so the system is simply assembled and operated on any bench top. Because distillation takes place under deep vacuum (about 5 Pa), volatile components boil at far lower temperatures and travel only a very short distance before condensing - protecting thermally unstable compounds and leaving only a minimal residue.

Key Features & Advantages

• Complete turn-key kit — borosilicate glassware, rotary-vane vacuum pump and recirculating chiller are all supplied; assemble, connect and run.
• Premium 3.3 borosilicate glass — high heat resistance, excellent chemical inertness and long service life.
• Short-path design with vacuum-jacketed vapor channel — minimum vapor travel reduces thermal degradation and improves the yield of valuable volatiles.
• Low-temperature distillation — at a working pressure of about 5 Pa, heat-sensitive compounds evaporate well below their normal boiling points.
• 2 L magnetic-stirring heating mantle (650 W, 50–1800 rpm) — uniform heating combined with active stirring for even, stable evaporation.
• Vacuum-jacketed short-path head with interchangeable take-off adapters — convenient multi-fraction collection without breaking vacuum.
• 1 L dry-ice cold trap — protects the vacuum pump from vapor attack and contamination.
• Standard 24/40 ground-glass joints — modular glassware that assembles and disassembles quickly for cleaning.
• 40 W stirring motor — consistent torque across the full 50–1800 rpm speed range.
• Low residue — short-path operation leaves markedly less residue in the boiling flask than conventional distillation.

Structure Diagram

The 2 L round-bottom flask (5) sits in the 2 L magnetic-stirring heating mantle (6) below the short-path distillation head (3), which carries the thermometer (4) and condenser (7). Distillate is routed through the glass three-way adapter with valve (8) and the stainless-steel three-way connector (10) into the 250 mL receiving flasks (12, 15), which are supported on cork flask supports (13, 16) by the stainless-steel lab jack (14), iron stand (17) and chain clamps (18). The vacuum gauge (9) and the dry-ice cold trap (11) sit between the glass train and the vacuum pump (2), while the recirculating chiller (1) supplies coolant to the condensers.

Structure of the AV-SP2L kit

Working Principle

• Short-path distillation separates liquid mixtures by exploiting differences in boiling point under negative pressure. As the sample in the boiling flask is heated, volatile components evaporate and rise into the condenser, where they are chilled by water circulated from the recirculating chiller and collected as distillate; higher-boiling residues remain in the flask. Because the unit operates under deep vacuum, the effective boiling temperature is far lower than at standard pressure, and the vapor travels only a very short distance before condensing. This makes the technique ideal for compounds that are unstable at high temperatures, and the short, low-pressure path also means that far less material is left behind as residue after distillation.
• Working principle of the AV-SP2L glass short-path distillation kit

Technical Specifications

• Standard Package Contents

Applications

• The AV-SP2L bench-top short-path kit is the practical choice wherever gentle, efficient separation and clean fraction collection matter at lab scale:
• Hemp, CBD & Cannabis Distillation — distillate polishing, THC remediation and recovery of terpene-rich fractions from crude oil.
• Essential Oil Fractionation — gentle separation of terpenes and oxygenated aroma compounds with minimal thermal damage.
• Botanical & Nutraceutical Extracts — purification and concentration of heat-sensitive active ingredients.
• Flavor & Fragrance Refining — polishing delicate aroma materials to premium, consistent grades.
• Solvent Recovery & Extract Concentration — fast, low-temperature removal of solvents from lab and pilot batches.
• Pharmaceutical & Specialty Chemicals — small-batch purification of high-boiling-point and thermally unstable intermediates.
• Typical application scenarios of the AV-SP2L — hemp/CBD oil distillation, essential-oil fractionation, nutraceutical purification and solvent recovery
• For more information, custom configurations, or a quotation, please contact our sales team. We offer turn-key solutions including vacuum pumps, heating/cooling circulators, and full automation packages.