ACE GLASS INCORPORATED 6902-227 Single Neck Wall Spherical 1000ML 35/20 Receiving Flask

( Brand: Ace Glass Incorporated ), ( Manufacturer Part Number: 6902-227 ), ( Part Type: Wall ), ( 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 ACE GLASS INCORPORATED 1000ml 35/20 Single Neck Heavy Wall Spherical Receiving Flask

The **Ace Glass 6902-227 1000 mL 35/20 Single-Neck Wall Spherical Receiving Flask** is a precision-engineered laboratory glassware essential for a wide range of chemical, biological, and pharmaceutical applications. Crafted from borosilicate glass (Type 3.3), this flask exemplifies durability, chemical resistance, and thermal stability, making it ideal for demanding experiments involving heating, cooling, or distillation processes. Its **wall spherical design** ensures even heat distribution, minimizing thermal gradients and reducing the risk of localized stress or cracking during high-temperature operations. The **1000 mL capacity** provides ample volume for medium-scale reactions, syntheses, or solvent transfers, while the **35/20 standard taper joint** ensures a secure, leak-proof connection to compatible glassware such as condensers, adapters, or additional flasks, facilitating seamless integration into complex setups. The **single-neck configuration** simplifies assembly, allowing for straightforward attachment of a single accessory such as a reflux condenser, dropping funnel, or thermometer adapter without the need for multi-port modifications. Constructed with meticulous attention to tolerances, the flask s smooth, polished interior minimizes surface irregularities that could trap residues or promote bacterial growth, ensuring consistent performance across repeated use. Whether employed in routine laboratory procedures, academic research, or industrial-scale preparations, this flask delivers reliability and precision, making it a cornerstone of modern glassware collections. Its robust construction and compatibility with standard laboratory equipment render it a versatile choice for chemists, biologists, and technicians seeking both functionality and longevity in their experimental workflows.

**Pros and Cons of buying a Ace Glass 6902-227 (1000 mL, 35/20 Single Neck Spherical Receiving Flask)**

1. **Durability and Quality** Ace Glass products are known for their high-quality borosilicate glass (typically Type I or II), which is resistant to thermal shock, chemical corrosion, and mechanical stress. This flask is designed for laboratory use, ensuring longevity even with frequent heating and cooling cycles.

2. **Precision and Standardization** The 35/20 joint standardizes compatibility with other glassware in the lab, making it easy to connect to condensers, adapters, or other glass apparatus. This is particularly useful in distillation, reflux, or reaction setups.

3. **Spherical Shape for Efficiency** The spherical design enhances heat distribution and reduces dead space, improving reaction yields and efficiency in processes like distillation or solvent recovery.

4. **Capacity and Versatility** The 1000 mL size offers a good balance between volume and usability, suitable for medium-scale laboratory procedures without excessive bulk.

5. **Compatibility with Lab Standards** The 35/20 joint is widely accepted in academic and industrial labs, reducing the need for custom adapters or non-standard fittings.

6. **Easy to Clean and Maintain** Borosilicate glass is non-porous and resistant to staining, making it straightforward to clean with solvents or mild detergents. It also resists chemical degradation from common lab reagents.

7. **Safety** Unlike plastic or lower-grade glassware, borosilicate glass does not leach contaminants and is less likely to shatter under thermal stress, reducing safety hazards.

8. **Cost-Effective for Long-Term Use** While the initial cost may be higher than disposable alternatives, its durability and reusability make it cost-effective over time.

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1. **Higher Upfront Cost** Compared to disposable or lower-grade glassware, this flask is more expensive, which may be a barrier for small-scale or budget-conscious users.

2. **Fragility Despite Durability** While borosilicate glass is tough, it is still glass and can break if dropped or subjected to extreme mechanical stress. Proper handling is required to avoid damage.

3. **Weight** The spherical shape and borosilicate material make this flask heavier than plastic alternatives, which can be cumbersome during frequent transfers or setups.

4. **Maintenance of Joints** The 35/20 joint requires occasional cleaning and lubrication (e.g., with high-vacuum grease) to ensure a tight seal, adding minor maintenance overhead.

5. **Limited to Glassware Systems** If your lab primarily uses non-standard fittings or plastic apparatus, this flask may not integrate seamlessly without adapters.

6. **Potential for Contamination** While borosilicate glass is inert, improper cleaning (e.g., using abrasive materials) or exposure to incompatible chemicals can introduce contaminants over time.

7. **Storage Space** The flask occupies more space than smaller or collapsible alternatives, which may be a consideration in labs with limited storage.

8. **Not Ideal for High-Pressure Applications** While it handles standard lab pressures well, it is not designed for high-pressure reactions or vacuum systems without additional reinforcement.

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The Ace Glass 6902-227 (1000 mL, 35/20 single neck spherical receiving flask) is a high-quality, versatile tool for laboratory applications requiring durability, chemical resistance, and compatibility with standard glassware systems. Its spherical design and borosilicate construction make it ideal for processes like distillation, reflux, or solvent recovery where efficiency and reliability are critical. However, its higher cost, weight, and maintenance requirements may not justify its use for casual or non-laboratory purposes.

- You are working in a laboratory setting (academic, industrial, or research) where durability, chemical resistance, and compatibility with standard glassware are essential.

- You frequently perform processes that benefit from even heat distribution and minimal dead space (e.g., distillation, reflux).

- You prioritize long-term cost savings due to its reusability and resistance to degradation.

- You have access to proper storage and handling procedures to avoid damage.

- You are on a tight budget and can use disposable or lower-grade glassware for occasional use.

- Your applications do not require the precision or thermal resistance of borosilicate glass (e.g., simple mixing or non-heated procedures).

- You lack space for storing heavy glassware or do not have the expertise to handle it safely.

- You need a flask for high-pressure or non-standard applications where this model is not suitable.

For most professional laboratory settings, this flask is a worthwhile investment due to its performance and longevity. For non-laboratory or low-frequency use, alternatives like plastic or lower-cost glassware may suffice.

Details:

See pictures for details. GSR veers 1730 GS 9.9.4 1730 Used item in good condition. Otherwise no cracks or chips throughout. Two small chips on inside joint lip 2mm each.

part #: 6902227 price

• $63.20

specifications plasticwarelabsuppy:

• brand: Ace Glass Incorporated
• mpn: 6902-227
• part type: Wall
• 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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• started: February 7, 2026
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• quantity: 1
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• # reviews: 7388
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• condition: Used
• Medical, Lab Dental Supplies > Glassware Plasticware > Other Medical Lab Glassware

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