WILMAD LG-7330-186 Glass Angled Round Bottom Boiling Flask 500ML 3-NECK 24/40

( Brand: Wilmad ), ( Manufacturer Part Number: LG-7330-186 ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory ), ( Unit Type: Unit ), ( Country Of Origin: United States ), ( Additional Information: Surplus Laboratory Consumable Supplies )

Review WILMAD Glass 500ml Angled 24/40 Round Bottom Boiling Flask

The **Wilmad LG-7330-186 500 mL Angled 3-Neck Round Bottom Boiling Flask** is a precision-engineered glassware essential for laboratories requiring high-performance chemical synthesis, distillation, and reflux operations. Crafted from **borosilicate glass Type 3.3** (with a coefficient of thermal expansion of 3.3 x 10 / C), this flask delivers exceptional resistance to thermal shock, chemical corrosion, and mechanical stress, ensuring reliability even under demanding experimental conditions. Its **angled design** (at a 30 tilt) optimizes space utilization in crowded workstations while maintaining efficient heat distribution and vapor condensation during reactions, making it ideal for applications where vertical flasks would be impractical.

Featuring **three standard 24/40 ground glass joints**, this flask accommodates a versatile array of laboratory accessories, including condensers, addition funnels, thermometers, and stirring bars, allowing for seamless integration into complex reaction setups. The **24/40 joint size** ensures compatibility with a wide range of standard laboratory glassware, facilitating modular experimentation without the need for adapters. The **500 mL capacity** strikes a balance between scalability and maneuverability, making it suitable for medium-sized syntheses, fractional distillations, and reflux processes where precise control over volume and temperature is critical.

The flask s **smooth, polished surface** minimizes dead zones where residues could accumulate, reducing the risk of cross-contamination and simplifying cleaning an important consideration in environments adhering to strict hygiene protocols. Additionally, the **reinforced base** enhances stability during heating or agitation, while the **clear borosilicate glass** provides unobstructed visibility of reaction progress, enabling real-time monitoring of color changes, phase separations, or bubble formation. Whether used in academic research, pharmaceutical development, or industrial chemistry, this flask exemplifies durability, functionality, and precision, making it a cornerstone of modern laboratory workflows. Its robust construction and adaptable design ensure it can handle a diverse range of chemical processes, from routine procedures to advanced organic synthesis, while maintaining the integrity of experimental results.

### **Pros and Cons of buying a Wilmad LG-7330-186 (500 mL Angled 3-Neck Round Bottom Boiling Flask with 24/40 Joints)**

1. **High-Quality Borosilicate Glass** Made from **Type 1 borosilicate glass (e.g., Kimble or equivalent)**, this flask is chemically resistant, durable, and can withstand high temperatures without thermal shock. It is ideal for laboratory applications requiring precision and longevity.

2. **Angled Design** The **angled neck** improves visibility of the contents, making it easier to monitor reactions, distillations, or reflux processes without obstruction. This is particularly useful in synthesis, extraction, and titration setups.

- One neck can accommodate a **condenser** (for reflux or distillation).

- Another can hold a **thermometer** or **addition funnel**.

- The third can be used for a **stirring bar, gas inlet, or additional equipment** (e.g., a dropping funnel).

- This modularity makes it adaptable for a wide range of experiments, including **reflux, distillation, or multi-step reactions**.

4. **Standard 24/40 Joints** Compatibility with **most laboratory glassware and adapters** ensures easy integration with condensers, funnels, and other accessories. No custom fittings are required, reducing setup time.

5. **500 mL Capacity** A **mid-sized volume** that balances practicality for small-scale synthesis (e.g., gram-scale reactions) while avoiding excessive solvent use. It is suitable for **teaching labs, R&D, and small-scale production**.

6. **Durability and Longevity** Wilmad products are known for **high-quality craftsmanship**, meaning this flask will likely last for years with proper care. It is less prone to cracking or warping compared to lower-quality glassware.

7. **Compatibility with Common Lab Equipment** Works seamlessly with **oil baths, heating mantles, and magnetic stirrers**, making it versatile for heating and stirring applications.

8. **Cleaning and Sterilization** Can be **autoclaved, sonicated, or cleaned with strong solvents** (e.g., acetone, ethanol) without degradation, making it suitable for sterile or high-purity applications.

9. **Manufacturer Reputation** Wilmad is a **trusted brand in laboratory glassware**, known for precision and reliability. Their products meet **ASTM and USP standards**, ensuring consistency in performance.

10. **Cost-Effective for Long-Term Use** While the upfront cost may be higher than disposable or low-quality glassware, its **durability and reusability** make it cost-effective over time.

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1. **Higher Initial Cost** Compared to **plastic or disposable alternatives**, this flask is more expensive. However, this is offset by its longevity and performance.

2. **Fragility** Despite its durability, **borosilicate glass can still break if dropped or subjected to thermal shock** (e.g., rapid heating/cooling). Care must be taken during handling and setup.

3. **Weight** The **heavy glass construction** may make it less convenient for frequent moving or transport compared to lighter alternatives (e.g., plastic flasks).

4. **Limited to Glassware Systems** If your lab primarily uses **plastic or metal reactors**, this flask may not be as practical, though 24/40 joints are widely compatible.

5. **Maintenance Requirements** Requires **proper cleaning and storage** to prevent residue buildup or damage. Improper handling (e.g., using abrasive cleaners) can scratch or weaken the glass over time.

6. **Not Ideal for High-Pressure Applications** While borosilicate is strong, it is **not designed for high-pressure reactions** (e.g., autoclave conditions). For such cases, specialized glass or metal reactors are needed.

7. **Potential for Joint Leaks** If the **24/40 joints are not properly lubricated or sealed**, leaks can occur during high-temperature or high-vacuum operations. Requires **Teflon tape or high-vacuum grease** for optimal performance.

8. **Not Suitable for Extreme pH or Corrosive Chemicals** While borosilicate is resistant to most common lab chemicals, **extreme pH (e.g., concentrated hydrofluoric acid) or highly corrosive reagents** may degrade it over time.

9. **Limited to Lab Settings** Not practical for **fieldwork or non-laboratory applications** due to its fragility and specialized design.

10. **Learning Curve for Setup** If you are unfamiliar with **glassware assembly**, setting up a three-neck flask with condensers and funnels may require practice to ensure proper sealing and functionality.

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### **Conclusion**

The **Wilmad LG-7330-186 500 mL angled 3-neck round bottom boiling flask** is an **excellent investment for laboratories requiring precision, durability, and versatility**. Its **borosilicate glass construction, angled design, and three 24/40 joints** make it highly adaptable for **synthesis, distillation, reflux, and other common lab techniques**. While it has a **higher upfront cost and requires careful handling**, its **longevity, chemical resistance, and compatibility with standard lab equipment** far outweigh these drawbacks for most professional or academic settings.

- **Undergraduate/graduate teaching labs**

- **Small-scale organic synthesis**

- **Pharmaceutical and chemical R&D**

- **Analytical chemistry applications**

If you are working in a **high-volume, low-cost environment** (e.g., some industrial settings) or need **disposable alternatives**, cheaper options may exist. However, for **any application requiring reliability and performance**, this Wilmad flask is a **highly recommended choice**.

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You need a **durable, high-quality glass flask** for **long-term use**.

You require **versatility** (three-neck setup for condensers, thermometers, etc.).

Your work involves **organic synthesis, distillation, or reflux**.

You prioritize **chemical resistance and thermal stability**.

You are willing to invest in **premium lab equipment** for professional or academic use.

You need a **disposable or ultra-low-cost alternative**.

Your applications involve **high-pressure or extreme corrosive conditions**.

You frequently move equipment and **prioritize portability over durability**.

Your lab already has **excessive glassware** and this is not a critical need.

- For **budget constraints**, consider **lower-cost borosilicate flasks** from other brands (e.g., Kimble, Corning).

- For **plastic alternatives**, **polypropylene or PTFE flasks** may be suitable for non-reactive applications but lack the durability of glass.

- For **high-pressure applications**, specialized **autoclave-grade glass or metal reactors** are necessary.

Overall, this is a **superior choice for serious laboratory work** and justifies its cost with **years of reliable service**.

Details:

No chips or cracks noted throughout. See pictures for details. GSR veers 1730 GS 9.9.4 1730 Used item in great condition.

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• brand: Wilmad
• mpn: Lg-7330-186
• intended use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory
• unit type: Unit
• country of origin: United States
• additional information: Surplus Laboratory Consumable Supplies

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