
( Brand: Kimax Kimble Kontes ), ( Manufacturer Part Number: 601000-1045 ), ( Part Type: Wall ), ( 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 Kontes 601000-1045 Glass 5000 mL 45/50 Wall Single-Neck Round Bottom Flask** is a precision-engineered laboratory glassware essential for a wide range of chemical, biochemical, and pharmaceutical applications. Crafted from borosilicate glass (Type 1, Kimble Kimax brand), this flask is renowned for its exceptional thermal and chemical resistance, making it ideal for high-temperature reactions, reflux setups, distillation processes, and solvent storage. The robust **45/50 wall thickness** ensures durability while maintaining clarity, allowing for accurate visual monitoring of reactions and contents. With a **5000 mL capacity**, this flask is well-suited for large-scale synthesis, batch processing, or experiments requiring substantial volumes, offering ample space for vigorous mixing or heating without risking breakage or contamination. The **single-neck design** provides versatility, accommodating standard ground glass joints (typically 24/40 or 29/32, depending on adapter compatibility) for attachment to condensers, stirrers, or other laboratory apparatus. The smooth, polished interior minimizes residue buildup and facilitates easy cleaning, while the reinforced base ensures stability during heating or agitation. Whether used in academic research, industrial manufacturing, or quality control laboratories, this flask exemplifies reliability and performance, adhering to stringent quality standards for safety and precision. Its compatibility with standard laboratory equipment and resistance to thermal shock make it a cornerstone of modern chemical experimentation.
### **Pros and Cons of buying a Kimble-Kontes 601000-1045 (5000 mL, 45/50 Joint, Single Neck Round Bottom Flask)**
#### **Pros:**1. **Durability and Quality** Kimble-Kontes is a well-established brand known for producing high-quality borosilicate glassware, particularly suitable for laboratory use. This flask is designed to withstand high temperatures and chemical resistance, making it ideal for reflux, distillation, and heating applications.
2. **Standardized Joint Compatibility** The 45/50 joint ensures compatibility with a wide range of laboratory glassware, adapters, and accessories, reducing the need for additional adapters or custom fittings.
3. **Large Volume Capacity** The 5000 mL size is useful for large-scale reactions, extractions, or distillation processes where a smaller flask would be insufficient.
4. **Single Neck Design** The single neck simplifies setup for certain procedures, such as reflux or simple heating, as it requires fewer connections compared to multi-neck flasks.
5. **Borosilicate Glass Composition** Borosilicate glass (e.g., Type 3.3) has a low coefficient of thermal expansion, reducing the risk of cracking under rapid temperature changes.
6. **Compatibility with Standard Lab Equipment** Works seamlessly with condensers, heating mantles, and other common lab apparatuses.
7. **Long Lifespan** Properly maintained, this flask can last for years, making it a cost-effective investment for frequent use.
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#### **Cons:**1. **Heavy and Fragile** Large glassware is inherently heavy and can be difficult to handle, especially when filled with liquids. It also requires careful transport to avoid breakage.
2. **Limited Versatility** A single-neck flask is less flexible than multi-neck versions, which may require additional adapters or separate setups for complex reactions (e.g., those needing multiple inlets or outlets).
3. **Cost** High-quality borosilicate glassware is more expensive than plastic or lower-grade glass alternatives, which may be a consideration for budget-conscious labs or small-scale users.
4. **Maintenance Requirements** Glassware must be cleaned thoroughly after use to prevent residue buildup, which can affect future experiments. Scratches or damage can also compromise its integrity.
5. **Space Requirements** A 5000 mL flask occupies significant bench or storage space, which may be a limitation in compact labs.
6. **Potential for Contamination** If not properly cleaned or stored, glassware can harbor contaminants from previous reactions, affecting experimental results.
7. **Breakage Risk** Despite its durability, glassware can still shatter if dropped or subjected to thermal shock (e.g., rapid heating/cooling).
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### **Conclusion:**The **Kimble-Kontes 601000-1045 (5000 mL, 45/50 joint, single neck round bottom flask)** is a robust, reliable choice for laboratories requiring large-scale reactions, distillation, or reflux processes. Its borosilicate construction ensures durability and chemical resistance, while the standardized joint compatibility simplifies setup. However, its weight, fragility, and limited versatility compared to multi-neck flasks may be drawbacks depending on the specific application.
For users who prioritize **durability, compatibility with standard lab equipment, and large-volume capacity**, this flask is an excellent investment. However, if **cost, space, or flexibility** (e.g., need for multiple ports) is a concern, alternatives like smaller flasks, multi-neck versions, or plastic alternatives (though less ideal for high-temperature use) may be worth considering.
### **Recommendation:** **Buy this flask if:**- You need a high-quality, large-capacity flask for routine lab work (e.g., reflux, distillation).
- You require compatibility with standard 45/50 joint accessories.
- You prioritize longevity and chemical resistance over cost savings.
**Consider alternatives if:**- You frequently require multiple ports (opt for a multi-neck flask).
- Budget constraints make this flask prohibitively expensive (look for lower-cost borosilicate options or used/refurbished units).
- Your workflow involves high-risk handling (e.g., very large volumes that are difficult to manage).
For most academic, industrial, or research labs with moderate to high demand for large-volume glassware, this flask is a **strong recommendation** due to its reliability and performance.
GSR veers 1730 GS 9.9.4 1730 Used item in good condition. See pictures for details. Chipped on joint lip, 14mm wide chip, swell as smaller 1-2mm chip lip.