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  3. KONTES KIMBLE DWK 286700-0000

KONTES KIMBLE DWK 286700-0000 Bantam Ware Glass Vigreux 14/20 Distilling Column

286700-0000 Kontes Kimble Dwk Bantam-ware Glass 14/20 Vigreux Distilling Column

( Brand: Kontes Kimble Dwk ), ( Manufacturer Part Number: 286700-0000 ), ( Unit Type: Unit ), ( Additional Search Terms: Used Laboratory Surplus Chemistry Glassware ), ( Product: Kontes Vigreux Distilling Column ), ( Material: Borosilicate Glass ), ( Joint: 14/20 ), ( Country Of Origin: United States ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory, Laboratory )

Review KONTES KIMBLE DWK Bantam ware Glass 14/20 Vigreux Distilling Column

The Kontes Kimble DWK 286700-0000 Bantam-Ware Glass 14/20 Vigreux Distilling Column is a precision-engineered laboratory instrument designed for high-efficiency fractional distillation, ideal for both academic research and industrial applications requiring meticulous separation of liquid mixtures. Constructed from durable, borosilicate glass (Bantam-Ware), this column is engineered to withstand repeated thermal cycling and chemical exposure, ensuring long-term reliability and resistance to thermal shock a critical consideration for processes involving high-boiling or volatile solvents. The Vigreux design, characterized by its internal helical grooves, maximizes surface area for vapor-liquid contact while minimizing pressure drop, resulting in sharper separation of components with lower reflux ratios compared to traditional packed columns. With a 14/20 standard taper joint, it seamlessly integrates with standard laboratory glassware, including flasks, condensers, and adapters, facilitating a cohesive and leak-proof setup. The column s robust construction and clear glass body allow for real-time visualization of distillation progress, enabling operators to monitor reflux ratios, bubble formation, and potential fouling or blockages without interrupting the process. Suitable for use in a wide range of applications from the purification of organic solvents and essential oils to the separation of complex mixtures in chemical synthesis this column is particularly well-suited for laboratories requiring a balance of efficiency, durability, and ease of maintenance. Its compatibility with standard laboratory glassware and vacuum systems further enhances its versatility, making it a cornerstone piece for any distillation workflow.

### **Pros and Cons of buying a Kontes Kimble DWK 286700-0000 Bantam-Ware Glass 14/20 Vigreux Distilling Column**

#### **Pros**

1. **High-Quality Construction** Made from borosilicate glass (likely Type 3.3 or similar), this column is durable, resistant to thermal shock, and chemically inert, making it suitable for repeated use in distillation processes.

2. **Efficient Fractionation** The Vigreux design features internal grooves that create turbulence, improving vapor-liquid contact and enhancing separation efficiency compared to simpler columns like packed or bubble cap columns.

3. **Compatibility with Standard Lab Equipment** The 14/20 joint standard ensures compatibility with most glassware, adapters, and distillation setups, reducing the need for custom fittings.

4. **Versatility** Suitable for small-scale laboratory or hobbyist distillations, including ethanol, essential oils, or other volatile compounds, depending on modifications (e.g., adding a thermometer adapter or packing material).

5. **Long Lifespan** Properly maintained, this column can last for years, especially if used with care to avoid mechanical stress or chemical corrosion.

6. **Transparency** Glass allows visual monitoring of the distillation process, which can be useful for troubleshooting or observing reflux behavior.

7. **Easy to Clean** Unlike metal columns, glass is non-reactive and can be cleaned with solvents or steam, though care must be taken to avoid scratching the surface.

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#### **Cons**

1. **Limited Capacity** As a "Bantam" (small-scale) column, it is not designed for large-volume distillations. It may struggle with high throughput or industrial applications.

2. **Manual Operation** Unlike automated systems, this requires manual control of temperature, reflux ratio, and collection, which can be time-consuming and less precise for complex separations.

3. **Potential for Breakage** Glassware is fragile, especially under thermal stress (e.g., rapid heating/cooling) or mechanical impact. Proper handling is essential to avoid accidents.

4. **No Built-in Thermometer Port** The standard Vigreux column lacks a thermometer adapter, requiring additional purchases (e.g., a separate thermowell or adapter) for temperature monitoring.

5. **Maintenance Requirements** Over time, glass may develop scratches or minor cracks, and seals (e.g., grease on joints) must be regularly checked and reapplied to prevent leaks.

6. **Cost Relative to Alternatives** While reasonably priced for a high-quality glass column, it may be more expensive than plastic or metal alternatives for very low-budget setups. However, glass offers superior performance and longevity.

7. **Limited Customization** Unlike packed columns, you cannot easily add packing material (e.g., glass beads or metal helices) to further enhance separation efficiency without modifying the design.

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### **Conclusion**

The Kontes Kimble DWK 286700-0000 Bantam-Ware Vigreux column is an excellent choice for **small-scale, precise distillations** where efficiency, durability, and chemical compatibility are priorities. Its Vigreux design provides better separation than simpler columns, and its borosilicate glass construction ensures reliability for repeated use. However, it is not ideal for large-scale or industrial applications, and its manual operation requires attention to detail.

If your needs align with laboratory or hobbyist distillations such as ethanol production, essential oil extraction, or chemical separations this column is a strong recommendation. For larger volumes or automated setups, consider pairing it with additional accessories (e.g., a thermometer adapter or reflux condenser) to maximize its utility.

**Final Recommendation:**

Purchase this column if you need a **high-quality, efficient, and durable** small-scale distillation column for precise separations. Ensure you have proper safety measures (e.g., heat-resistant gloves, eye protection) and complementary equipment (e.g., condenser, heating mantle) to operate it effectively. For beginners, pair it with instructional resources on distillation techniques to optimize performance.

Details:

Kontes Glass co 14/20 Distilling column 5 long Lot of five 5 units.

part #: 2867000000 price

  • $37.49

specifications plasticwarelabsuppy:

  • brand: Kontes Kimble Dwk
  • mpn: 286700-0000
  • unit type: Unit
  • additional search terms: Used Laboratory Surplus Chemistry Glassware
  • product: Kontes Vigreux Distilling Column
  • material: Borosilicate Glass
  • joint: 14/20
  • country of origin: United States
  • intended use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory, Laboratory

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  • class: Standard
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  • cost: $8.72
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offer plasticwarelabsuppy:

  • availability: In Stock
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  • quantity: 1
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  • started: April 6, 2026

general plasticwarelabsuppy:

  • Medical, Lab Dental Supplies > Glassware Plasticware > Other Medical Lab Glassware
  • condition: Used

seller plasticwarelabsuppy:

  • # reviews: 344
  • city: Tuckahoe, New York
  • rating: 100.0%
unit type: unit, additional search terms: used laboratory surplus chemistry glassware, product: kontes vigreux distilling column, joint: 14/20, country of origin: united states, intended use/discipline: biological laboratory, dental laboratory, medical laboratory, microbiological laboratory, physical laboratory, laboratory,
category: business & industrial > medical, lab dental supplies > glassware plasticware > medical lab glassware, material: borosilicate glass, sku: 13622056498991892,
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  • Used. Offer #1 priced at $37.49 + $0.00 shipping estimate = $37.49* total. Lab Bench Supplies. 14/20 joints, vigreux indents.FREE SHIPPING

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