
( Brand: Kimax Kimble ), ( Manufacturer Part Number: 25055-1000 ), ( 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 )
The **Kimble Kimax 25055-1000 1000ml 24/40 Single Neck Flat Bottom Boiling Flask** is a high-quality, precision-engineered laboratory glassware essential for a wide range of chemical, biological, and pharmaceutical applications. Crafted from durable **borosilicate glass (Type 3.3)**, this flask is designed to withstand extreme thermal shock, rapid temperature changes, and aggressive chemical environments, ensuring reliability and longevity in demanding laboratory settings. Its **flat-bottom design** provides exceptional stability on heated surfaces, such as hot plates or mantles, making it ideal for distillation, reflux, and boiling processes where even heating is critical. The **24/40 standard ground joint** offers a secure, leak-proof connection to compatible glassware, including condensers, adapters, and other laboratory apparatus, facilitating seamless integration into complex experimental setups. With a **1000ml capacity**, this flask strikes a balance between practicality and efficiency, accommodating moderate-scale reactions while maintaining precision. The **single neck configuration** simplifies assembly, making it a versatile choice for procedures requiring a straightforward, unobstructed pathway for gases or liquids. Additionally, the **flat, unpolished base** enhances thermal conductivity, ensuring uniform heat distribution during heating operations. Whether used in academic research, industrial synthesis, or routine laboratory procedures, this Kimble Kimax flask delivers exceptional performance, durability, and chemical resistance, making it a cornerstone of modern scientific experimentation.
### **Pros and Cons of buying a Kimax Kimble 25055-1000 Glass 1000ml 24/40 Single Neck Flat Bottom Boiling Flask**
#### **Pros:**1. **High-Quality Borosilicate Glass (Type 3.3)** Resistant to thermal shock, chemical corrosion, and mechanical stress, making it durable for laboratory use.
2. **Standard 24/40 Joint** Compatible with a wide range of laboratory glassware and adapters, ensuring versatility in setups.
3. **Flat Bottom Design** Provides stability on hot plates or heating mantles, reducing the risk of tipping or uneven heating.
4. **Single Neck Configuration** Simplifies connections for condensers, funnels, or other accessories, reducing potential leaks.
5. **1000ml Capacity** Suitable for medium-scale reactions, extractions, or distillation processes in academic and industrial labs.
6. **Brand Reputation** Kimble (now part of VWR) is a trusted manufacturer of laboratory glassware, known for precision and reliability.
7. **Compatibility with Autoclaves** Can withstand sterilization conditions if properly handled, useful for microbiological applications.
8. **Chemical Resistance** Resists most acids, bases, and organic solvents, making it versatile for various experiments.
9. **Long Lifespan** Properly maintained borosilicate glass can last decades, reducing long-term costs.
10. **Easy Cleaning** Smooth glass surface allows for thorough cleaning with standard laboratory detergents and sonication.
#### **Cons:**1. **Fragility Compared to Plastic** Despite borosilicate strength, it can still shatter if dropped or subjected to extreme thermal shock (e.g., rapid cooling after heating).
2. **Weight** Glass flasks are heavier than plastic alternatives, which may be inconvenient for frequent handling.
3. **Cost** More expensive than disposable plastic or lower-grade glassware, though the investment pays off in durability.
4. **Limited Color Options** Typically comes in clear glass, which may not be ideal for light-sensitive reactions (though amber versions exist but are less common).
5. **Maintenance Requirements** Requires careful handling to avoid scratches or cracks, which could compromise performance.
6. **Potential for Contamination** If not cleaned thoroughly, residues from previous experiments may remain, affecting results.
7. **Not Ideal for High-Pressure Applications** Standard borosilicate glass is not designed for pressurized systems (e.g., high-pressure reactors).
8. **Replacement Parts Dependency** If the joint or neck breaks, replacement may be necessary, adding to costs.
9. **Space Requirements** Bulkier than plastic alternatives, requiring more storage space.
10. **Potential for Microfractures** Over time, stress or thermal cycling may lead to microscopic cracks, reducing safety and longevity.
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### **Conclusion**
The **Kimax Kimble 25055-1000 1000ml 24/40 single-neck flat-bottom boiling flask** is an excellent choice for laboratories requiring **durability, chemical resistance, and compatibility with standard glassware**. Its borosilicate construction ensures reliability in demanding applications, while the 24/40 joint and flat base enhance usability. However, its **higher cost, weight, and fragility** compared to plastic alternatives may be drawbacks depending on the specific needs of the user.
For **routine laboratory work, chemical synthesis, or educational settings**, this flask is highly recommended due to its **long-term value and performance**. If **budget constraints or disposable convenience** are priorities, lower-cost plastic alternatives may suffice but they lack the durability and chemical resistance of borosilicate glass.
### **Recommendation**
**Buy this flask if:**- You need a **long-lasting, chemically resistant** piece of glassware for **medium-scale reactions, distillation, or heating applications**.
- Compatibility with **standard 24/40 joints** is essential for your setup.
- You prioritize **stability and thermal resistance** over cost or weight.
**Consider alternatives if:**- You require **disposable or lightweight** options (e.g., plastic flasks).
- Your budget is limited, and you can compromise on durability.
- You work with **high-pressure or extreme conditions** where specialized glass (e.g., quartz) is needed.
For most **academic, industrial, or research laboratories**, this Kimble flask is a **strong, cost-effective investment** that will serve reliably for years.
Used item in good condition.