CHEMGLASS CG-1506-23 Glass Round Bottom Flask Single Neck 1000ML 24/40

( Brand: Chemglass ), ( Manufacturer Part Number: CG-1506-23 ), ( 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 1000ml Round Bottom Flask Single Neck St 24/40

The **Chemglass CG-1506-23 1000ml Round Bottom Flask with Single Neck (24/40 Joint)** is a precision-engineered laboratory glassware essential for a wide range of chemical, biochemical, and pharmaceutical applications. Crafted from high-quality borosilicate glass (Type 1, conforming to ASTM E438 and USP Class A standards), this flask is designed to withstand extreme thermal and chemical stresses, ensuring durability and reliability in demanding experimental conditions. Its **1000ml capacity** provides ample volume for medium-scale reactions, distillation processes, or solvent preparations, while the **smooth, polished interior** minimizes adsorption of reactive substances, reducing contamination risks and improving reaction efficiency. The **single 24/40 standard taper joint** offers versatility, allowing seamless connection to a variety of adapters, condensers, or additional glassware components, such as addition funnels, reflux condensers, or vacuum attachments. The **round bottom design** optimizes heat distribution during heating or cooling, promoting uniform reaction conditions and reducing hot spots that could compromise safety or yield. Additionally, the flask s **thick, reinforced walls** enhance structural integrity, making it resistant to thermal shock and mechanical stress, whether used in open-flame heating, oil baths, or under vacuum conditions. Ideal for applications in organic synthesis, analytical chemistry, or educational laboratories, this flask combines precision engineering with robust performance, ensuring consistent results across a spectrum of laboratory procedures. Its **clear, transparent construction** also facilitates real-time monitoring of reactions, while the **ground glass joint** provides a secure, leak-proof seal when properly lubricated. Whether employed in routine synthesis, solvent extraction, or specialized chemical transformations, the Chemglass CG-1506-23 delivers the reliability and precision demanded by modern laboratory workflows.

**Pros and Cons of buying a Chemglass CG-1506-23 (1000 mL Round Bottom Flask, Single Neck, 24/40 Joint)**

### **Pros**

1. **High-Quality Construction** Chemglass is a reputable manufacturer known for producing durable, precision-engineered glassware. This flask is designed for laboratory use, ensuring reliability in chemical synthesis, distillation, and other reactions.

2. **Standardized Joint Size (24/40)** The 24/40 joint is a universal standard in laboratory glassware, making it compatible with a wide range of adapters, condensers, and other glassware components. This flexibility simplifies setup for various experiments.

3. **Durability and Chemical Resistance** Made from borosilicate glass (likely Type I or III), this flask is resistant to thermal shock and most common laboratory chemicals, including acids, bases, and organic solvents. It can withstand heating and cooling cycles without cracking.

4. **Precision Dimensions** The 1000 mL capacity is clearly marked, and the flask is designed for accurate volume measurements, which is essential in quantitative chemistry and synthesis.

5. **Single Neck Design** The single-neck configuration simplifies attachment to a single adapter or condenser, making it ideal for basic reactions, reflux setups, or simple distillation.

6. **Compatibility with Vacuum Systems** The 24/40 joint can accommodate vacuum adapters, allowing for use in reduced-pressure applications like rotary evaporation or vacuum filtration.

7. **Long-Term Value** High-quality glassware lasts for years with proper care, making it a cost-effective investment compared to disposable plastic alternatives.

8. **Easy to Clean** The smooth glass surface resists staining and is easy to clean with laboratory detergents, brushes, or ultrasonic cleaners.

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### **Cons**

1. **Fragility** Despite its durability, glassware is inherently breakable. Dropping or mishandling can shatter the flask, potentially causing injury or spills. Extra care is required during transport and use.

2. **Weight** A 1000 mL borosilicate flask is heavier than plastic alternatives, which may make it less convenient for frequent handling or fieldwork.

3. **Limited Versatility** The single-neck design restricts more complex setups that require multiple ports (e.g., for simultaneous addition of reagents or gas inlet). For advanced applications, a multi-neck flask may be necessary.

4. **Cost** Compared to disposable plastic flasks or lower-quality glassware, this flask is more expensive upfront. However, its longevity often justifies the cost in professional settings.

5. **Maintenance Requirements** Glassware must be cleaned thoroughly after use to prevent residue buildup, which can interfere with subsequent experiments. Scratches or pitting from improper cleaning can also weaken the glass over time.

6. **Potential for Contamination** If not cleaned properly, glassware can harbor residues from previous reactions, leading to cross-contamination in sensitive experiments.

7. **Not Ideal for High-Pressure Applications** While borosilicate glass is strong, it is not designed for high-pressure environments (e.g., autoclaves or pressurized reactors). Specialized glassware (e.g., Parr flasks) is required for such uses.

8. **Limited Availability of Replacement Parts** If the flask develops a crack or damage, repairs may be difficult or impossible, and replacement may be necessary.

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### **Conclusion**

The **Chemglass CG-1506-23 (1000 mL single-neck round bottom flask with 24/40 joint)** is an excellent choice for laboratory applications requiring durability, chemical resistance, and compatibility with standard glassware. Its borosilicate construction ensures reliability in heating, cooling, and chemical exposure, while the 24/40 joint provides versatility for various setups. However, its fragility, weight, and higher cost compared to disposable alternatives must be considered. For most academic, industrial, or research laboratories, the investment is justified by its performance and longevity.

### **Recommendation**

- You need a reliable, high-quality glassware piece for routine laboratory work (e.g., reflux, distillation, synthesis).

- You require compatibility with standard 24/40 adapters and condensers.

- You prioritize durability and chemical resistance over convenience.

- You are working in a setting where glassware reuse is practical (e.g., universities, research labs, or industrial facilities).

- You frequently handle fragile glassware and prioritize ease of use (e.g., in teaching labs with students).

- You need a multi-neck flask for complex reactions.

- You are working in a field where disposable plasticware is sufficient (e.g., some biological or non-hazardous applications).

- Budget constraints make the upfront cost prohibitive, and you can source a lower-cost alternative (though quality may suffer).

For most serious laboratory users, this flask is a **strong recommendation** due to its balance of quality, functionality, and longevity. Always ensure proper handling and storage to maximize its lifespan.

Details:

Minor signs of use and writing. GSR veers 1730 GS 9.9.4 1730 Used item in good condition. See pictures for details. No chips or cracks noted throughout.

part #: cg150623 prices

• $39.99-$59.00

specifications plasticwarelabsuppy:

• brand: Chemglass
• mpn: Cg-1506-23
• 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

offer plasticwarelabsuppy:

• availability: In Stock
• started: February 5, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0

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general plasticwarelabsuppy:

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

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• city: Cotati, California
• rating: 99.8%
• # reviews: 7378

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