CHEMGLASS CG-1217-HC-20 Reflux Condenser 24/40 GL-14 210 64MM

( Brand: Chemglass ), ( Manufacturer Part Number: CG-1217-HC-20 ), ( Part Type: Condenser ), ( Intended Use/discipline: Biological Laboratory, Physical Laboratory, Dental Laboratory, Microbiological Laboratory, Medical Laboratory ), ( Country Of Origin: United States ), ( Unit Type: Unit ), ( Additional Information: Surplus Laboratory Consumable Supplies )

Review CHEMGLASS 24/40 Compact 210 64mm Reflux Condenser

The **Chemglass CG-1217-HC-20 24/40 GL-14 210 64mm Reflux Condenser** is a high-performance, precision-engineered glassware component designed to excel in laboratory settings where efficient heat transfer and reliable distillation are paramount. This condenser is part of Chemglass s renowned **HC-20 series**, which features a **64mm outer diameter** and a **24/40 standard joint**, ensuring seamless compatibility with a wide range of glassware, including round-bottom flasks, distillation apparatuses, and reaction vessels. The **GL-14** designation indicates its construction from **Type I borosilicate glass**, a material renowned for its exceptional thermal stability, chemical resistance, and durability under repeated heating and cooling cycles, making it ideal for both routine and demanding laboratory procedures.

The condenser s **210mm length** provides ample surface area for effective condensation, minimizing heat loss and maximizing efficiency during reflux operations. Its **double-walled design** incorporates a **cooling jacket** that can be connected to a water supply, allowing for precise temperature control and optimal cooling performance. The **inner coil** is meticulously crafted to ensure even distribution of cooling water, preventing hot spots and ensuring consistent condensation rates. This design not only enhances the condenser s efficiency but also reduces the risk of solvent loss and contamination, which is critical in applications such as fractional distillation, solvent recovery, and sensitive chemical syntheses.

Built to withstand rigorous use, the **Chemglass CG-1217-HC-20** features reinforced glass construction with **polished joints** that promote leak-proof connections and ease of assembly. The **24/40 ground glass joint** adheres to industry standards, ensuring compatibility with most standard laboratory glassware, while the **64mm diameter** accommodates a broad range of flask sizes, from small-scale reactions to larger-scale processes. Additionally, the condenser s **smooth, tapered design** minimizes dead spaces, reducing the potential for residue buildup and simplifying cleaning a key consideration in laboratories where sterility and precision are non-negotiable.

Whether used in academic research, pharmaceutical development, or industrial chemistry, this condenser delivers **reliable performance, durability, and versatility**. Its robust construction and efficient cooling mechanism make it an indispensable tool for chemists and technicians who demand high-quality glassware that can handle the most demanding applications. With Chemglass s reputation for precision and reliability, the **CG-1217-HC-20** stands as a trusted workhorse in any laboratory setting, ensuring optimal results with every use.

### **Pros and Cons of buying a Chemglass CG-1217-HC-20 (24/40 GL, 14" Length, 64mm Diameter) Reflux Condenser**

1. **High-Quality Construction** Chemglass is a reputable manufacturer known for durable, precision-engineered glassware. This condenser is built to withstand repeated use in laboratory settings, reducing the risk of leaks or breakage during reflux operations.

2. **Efficient Cooling Performance** The 14-inch length provides ample surface area for effective condensation, ensuring better heat transfer and minimizing solvent loss during distillation or reflux reactions. The 64mm diameter offers a good balance between cooling efficiency and space constraints in most setups.

3. **Standard 24/40 Joint Compatibility** The 24/40 ground glass joint ensures a secure, leak-proof connection with other standard laboratory glassware (e.g., round-bottom flasks, adapters, or distillation heads). This compatibility simplifies setup and reduces the need for additional adapters.

- Reflux reactions (e.g., esterification, Grignard reactions)

- Simple distillation

- Solvent recovery

- Small-scale synthesis (up to 500 mL flask capacity, depending on setup)

- Compatibility with cooling systems (e.g., water or cryogenic cooling, if modified)

5. **Durability and Longevity** Chemglass products are designed for repeated use, often lasting years with proper care. The borosilicate glass (likely Type I or III) resists thermal shock and chemical corrosion better than standard soda-lime glass.

6. **Cleanability** The smooth glass surface is easy to clean with solvents, detergents, or ultrasonic baths, reducing contamination risks in sensitive reactions.

7. **Cost-Effective for Routine Use** While not the cheapest condenser on the market, its durability and performance justify the investment for frequent or heavy-duty use in academic or industrial labs.

8. **Safety** Glass condensers eliminate the risk of corrosion or contamination associated with metal or plastic alternatives, making them ideal for pharmaceutical, analytical, or high-purity applications.

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1. **Fragility** Glassware is inherently brittle and can shatter if dropped or subjected to thermal stress (e.g., rapid heating/cooling). This requires careful handling, especially in busy lab environments.

2. **Limited Cooling Capacity** The 64mm diameter and 14-inch length may not be sufficient for high-boiling solvents, very large-scale reactions, or systems requiring extreme cooling (e.g., cryogenic temperatures). For such cases, a larger condenser (e.g., 80mm or 100mm diameter) or a double-surface condenser may be needed.

3. **Leak Risk with Improper Use** If the 24/40 joint is not lubricated properly (e.g., with high-vacuum grease or silicone grease) or if the condenser is overpressurized, leaks can occur. This requires attention to setup and maintenance.

4. **Space Requirements** The 14-inch length occupies vertical space, which may be a constraint in compact setups or fume hoods with limited height.

5. **Maintenance Overhead** Glass condensers require periodic cleaning to remove residue (e.g., tar, polymers, or salts), which can be time-consuming. Some stubborn deposits may require mechanical scrubbing or soaking in strong solvents.

6. **Cost Compared to Alternatives** While durable, Chemglass condensers are more expensive than basic plastic or metal condensers. For one-time or low-frequency use, a cheaper option (e.g., a 12-inch glass condenser) might suffice.

7. **Potential for Contamination** If not cleaned thoroughly, glass surfaces can harbor organic residues or microbial growth, which may affect reaction outcomes, especially in sensitive applications.

8. **Limited Customization** Unlike metal condensers, glass condensers cannot be easily modified for specialized cooling (e.g., spiral cooling tubes). Custom modifications may require additional adapters or external cooling systems.

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### **Conclusion and Recommendation**

The **Chemglass CG-1217-HC-20** is an excellent choice for laboratories requiring a **reliable, high-performance reflux condenser** for routine organic synthesis, distillation, or reflux reactions. Its **durability, efficiency, and compatibility with standard glassware** make it a versatile tool for academic, industrial, or pharmaceutical settings where precision and cleanliness are critical.

#### **Who Should Buy It?**

- **Academic labs** performing frequent reflux or distillation.

- **Industrial chemists** needing a long-lasting condenser for synthesis.

- **Pharmaceutical/analytical labs** where glassware purity is essential.

- **Users working with moderate-boiling solvents** (e.g., ethanol, toluene, THF) in 500 mL or smaller setups.

#### **Who Might Consider Alternatives?**

- **Budget-conscious buyers** with infrequent use: A shorter (12-inch) or lower-cost condenser may suffice.

- **High-volume or cryogenic applications**: Larger condensers (e.g., 80mm diameter) or double-surface condensers are better.

- **Users with space constraints**: A shorter condenser or vertical setup may be preferable.

- **Those prioritizing ease of replacement**: Plastic or metal condensers (e.g., Allihn condensers) are more durable but less chemically inert.

If your workflow involves **regular reflux or distillation with moderate-boiling solvents** and you prioritize **durability, compatibility, and efficiency**, the **Chemglass CG-1217-HC-20** is a **strong, well-rounded investment**. Pair it with a **high-quality joint lubricant** (e.g., Apiezon or silicone grease) and handle it with care to maximize its lifespan. For specialized needs (e.g., high-boiling solvents or cryogenic cooling), consider supplementing it with additional cooling systems or larger condensers.

Details:

No chips or cracks throughout with little to no signs of use. See pictures for details. GSR veers 1730 GS 9.9.4 1730 Used item in great condition.

part #: cg1217hc20 prices

• $160.99-$300.00

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• brand: Chemglass
• mpn: Cg-1217-hc-20
• part type: Condenser
• intended use/discipline: Biological Laboratory, Physical Laboratory, Dental Laboratory, Microbiological Laboratory, Medical Laboratory
• country of origin: United States
• unit type: Unit
• additional information: Surplus Laboratory Consumable Supplies

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