CHEMGLASS CG-1506-17 Glass Single Neck Round Bottom Flask 250ML 24/40
( Brand: Chemglass ), ( Manufacturer Part Number: CG-1506-17 ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory ), ( Country Of Origin: United States ), ( Unit Type: Unit ), ( Additional Information: Surplus Laboratory Consumable Supplies )
Review CHEMGLASS Glass 250ml 24/40 Single Neck Round Bottom Flask
The **Chemglass CG-1506-17 250 mL 24/40 Single Neck Round Bottom Flask** is a precision-engineered laboratory glassware essential for a wide range of chemical synthesis, distillation, and reaction processes. Crafted from high-quality borosilicate glass (Type I, conforming to ASTM E438 and ISO 3585 standards), this flask is designed to withstand extreme thermal and chemical stresses, ensuring durability and reliability even under demanding experimental conditions. Its **250 mL capacity** strikes an ideal balance between versatility and space efficiency, making it suitable for small-scale reactions, reflux setups, or preliminary testing before scaling up. The **24/40 standard taper joint** allows for seamless compatibility with a vast array of laboratory accessories, including condensers, adapters, and ground glass stoppers, facilitating efficient and leak-proof connections without the need for additional seals or clamps. The **single neck design** provides a straightforward interface for attaching apparatuses, such as a reflux condenser or a dropping funnel, while its **smooth, rounded bottom** promotes even heating and minimizes hot spots during distillation or boiling, reducing the risk of thermal shock or uneven reaction rates. The flask s **clear, transparent borosilicate glass** offers excellent optical clarity, enabling precise visual monitoring of reactions, color changes, or the presence of precipitates. Additionally, its **smooth, polished surface** resists chemical corrosion and makes cleaning effortless, whether by hand or in an automated glassware washing system. Whether used in academic research, pharmaceutical development, or industrial chemistry, this flask exemplifies reliability and precision, making it an indispensable tool for chemists and laboratory technicians seeking both performance and longevity in their experimental workflows.
### **Pros and Cons of buying a Chemglass CG-1506-17 (250 mL, 24/40 Single Neck Round Bottom Flask)**
#### **Pros:**1. **High-Quality Borosilicate Glass** The flask is made from **Type 1 borosilicate glass**, which is chemically resistant, durable, and capable of withstanding high temperatures (up to 500 C). This makes it suitable for a wide range of laboratory applications, including heating, refluxing, and distillation.
2. **Standard 24/40 Joint Compatibility** The **24/40 ground glass joint** ensures compatibility with most laboratory glassware, adapters, and accessories (e.g., condensers, funnels, clamps). This flexibility makes it versatile for various setups without needing additional adapters.
3. **Single Neck Design** The **single neck** simplifies connections for basic reactions, reflux setups, or simple distillations. It is ideal for experiments where only one inlet or outlet is required.
4. **Durable Construction** Chemglass is known for producing **thick-walled, reinforced glassware**, reducing the risk of breakage during normal use. The flask is designed to handle moderate vacuum and pressure applications.
5. **Clean and Smooth Interior** The **polished interior** minimizes residue buildup, making it easier to clean and reducing the risk of contamination in sensitive reactions.
6. **Cost-Effective for Common Use** At **250 mL**, this flask is a practical size for small-scale laboratory work, offering good value for its intended applications without being overly expensive.
7. **Brand Reputation** Chemglass is a **well-established manufacturer** with a history of producing reliable laboratory glassware, ensuring consistent quality and performance.
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#### **Cons:**1. **Limited to Single Neck Applications** If your work requires **multiple ports** (e.g., for gas inlet, thermometer, and reflux simultaneously), this flask will not suffice. You would need a **multi-neck flask** instead.
2. **Ground Glass Joints Can Be Fussy** The **24/40 joint** requires proper lubrication (e.g., high-vacuum grease) to seal effectively. If not maintained, leaks can occur, especially under vacuum or pressure.
3. **Not Ideal for Extreme Conditions** While borosilicate glass is strong, **prolonged exposure to high heat, sudden temperature changes, or mechanical stress** (e.g., dropping) can still lead to cracking or failure.
4. **Cleaning Challenges** Residues from certain reactions (e.g., highly viscous or corrosive materials) may be difficult to remove, requiring **strong solvents or ultrasonic cleaning**. Some stubborn residues might require replacement of the flask.
5. **Weight and Fragility** Despite its durability, **glassware is inherently fragile**. It can break if dropped or subjected to excessive force, posing a safety hazard in busy labs.
6. **Limited to Glass Connections** If your setup requires **non-glass components** (e.g., PTFE-lined joints or metal fittings), you may need additional adapters, increasing complexity and potential leak risks.
7. **Potential for Contamination** If not properly cleaned or stored, **dust, oils, or residues** from previous uses can contaminate subsequent experiments, especially in sensitive applications (e.g., organic synthesis or analytical chemistry).
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### **Conclusion**
The **Chemglass CG-1506-17 (250 mL, 24/40 single neck round bottom flask)** is a **reliable, versatile, and cost-effective choice** for basic to intermediate laboratory work, particularly when only a **single connection point** is needed. Its **borosilicate glass construction** ensures durability and chemical resistance, making it suitable for heating, reflux, and simple distillations. However, it is **not ideal** for applications requiring **multiple ports, extreme pressure/vacuum, or highly corrosive conditions** without additional modifications.
### **Recommendation**
- **Buy this flask if:**- You need a **durable, standard-sized round bottom flask** for **basic organic synthesis, reflux, or distillation**.
- Your setup requires **only one connection point** (e.g., a condenser or addition funnel).
- You prioritize **reliability and compatibility** with other 24/40 glassware.
- You work in a **general chemistry or undergraduate lab** setting where extreme conditions are rare.
- **Consider alternatives if:**- You require **multiple necks** (e.g., for gas inlet, thermometer, and reflux simultaneously) **Multi-neck flask (e.g., Chemglass CG-1506-24 or CG-1506-30)**.
- Your work involves **high-vacuum or high-pressure applications** **Heavy-walled or PTFE-lined flasks** may be needed.
- You frequently handle **highly corrosive or viscous materials** **PTFE or polypropylene alternatives** (e.g., Kimble Kontes or Ace Glass) might be more suitable.
- You need **automation or specialized connections** **Flasks with ground glass joints may not be ideal** (consider **quick-fit or metal-sealed systems**).
For most **standard laboratory tasks**, this flask is an **excellent purchase** due to its **balance of quality, cost, and versatility**. Always ensure proper handling, cleaning, and storage to maximize its lifespan.
Details:
GSR veers 1730 GS 9.9.4 1730 , GSR 1730 Used item in good condition. Some minor writing appears to be pencil on inside joint. One small chip 1mm on inside lip of joint. Otherwise no chips or cracks throughout.
See pictures for details.
part #: cg150617 prices
- $14.99-$61.27
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- brand: Chemglass
- mpn: Cg-1506-17
- intended use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory
- country of origin: United States
- unit type: Unit
- additional information: Surplus Laboratory Consumable Supplies
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- condition: Used
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