ACE GLASS 9250-04 Distillation Finger Joint Inc. 14/20 92MM

( Brand: Ace Glass ), ( Manufacturer Part Number: 9250-04 ), ( Model: ACE GLASS INC. 9250-04 ), ( Part Type: Joint ), ( Country Of Origin: United States )

Review ACE GLASS Inc. Distillation Cold Finger 14/20 92mm Long Below Joint

The **Ace Glass 9250-04 Distillation Finger (14/20, 92mm Joint)** is a precision-engineered glassware component designed for laboratory and industrial distillation applications, offering both reliability and versatility in separatory processes. Crafted from high-quality borosilicate glass (typically Type 1 or Type 3.3, though exact specifications may vary by manufacturer), this distillation finger is built to withstand repeated thermal cycling, chemical exposure, and high-vacuum conditions without compromising structural integrity or clarity. The **14/20 standard taper joint** ensures a secure, leak-proof connection to compatible glassware, such as distillation columns, condensers, or receiving flasks, while the **92mm joint** at the opposite end provides a wide, durable interface for attaching additional components like side arms, adapters, or custom setups. This dual-joint configuration makes it ideal for complex distillation setups, including fractional distillation, rotary evaporation, or solvent recovery systems where precise fluid flow and minimal dead volume are critical.

The finger s design prioritizes both functionality and ease of use, featuring a **smooth, tapered profile** that minimizes turbulence and maximizes efficiency during the distillation process. Its **thick-walled construction** enhances durability, reducing the risk of breakage during assembly or operation, while the **polished interior surface** ensures minimal residue buildup and consistent fluid flow. The finger s **clear, transparent glass** allows for real-time visualization of the distillation process, enabling operators to monitor phase separation, bubble formation, or potential blockages without disassembling the apparatus. Additionally, the **standardized joint sizes** make it fully compatible with a wide range of laboratory glassware, including Ace Glass, Kontes, or other reputable brands, ensuring seamless integration into existing setups.

Beyond its technical specifications, the **Ace Glass 9250-04** is engineered for long-term performance, often used in research laboratories, pharmaceutical manufacturing, and chemical production facilities where precision and repeatability are non-negotiable. Its **high-temperature resistance** (typically up to 300 C or higher, depending on the borosilicate grade) allows for the distillation of high-boiling solvents, while its **chemical resistance** ensures compatibility with a broad spectrum of organic and inorganic compounds, including acids, bases, and polar solvents. For users requiring additional functionality, the finger can be paired with accessories like **PTFE-lined joints** or **ground glass stopcocks** to further enhance sealing and ease of operation. Whether used in academic research, industrial synthesis, or quality control applications, this distillation finger delivers the reliability and precision demanded by demanding distillation workflows.

**Pros and Cons of buying a Ace Glass 9250-04 Distillation Finger (14/20, 92mm Joint)**

### **Pros**

1. **Durability and Quality** Ace Glass is a well-established manufacturer known for producing high-quality borosilicate glassware designed for laboratory and distillation applications. The 9250-04 is made from Type I borosilicate glass, which is resistant to thermal shock, chemical corrosion, and prolonged use, making it suitable for repeated distillation cycles.

2. **Compatibility with Standard Setups** The 14/20 joint standard ensures compatibility with most laboratory glassware, including flasks, condensers, and adapters. This makes it easy to integrate into existing distillation systems without the need for additional adapters.

3. **Wide Application Range** The 92mm joint provides flexibility for connecting to various pieces of equipment, such as fractionating columns, side-arm adapters, or additional distillation fingers. This versatility is useful for both simple and complex distillation setups.

4. **Cost-Effective for Hobbyists and Small-Scale Users** Compared to custom or high-end laboratory glassware, the Ace Glass 9250-04 offers a balance between affordability and functionality. It is a practical choice for home distillers, small-scale producers, or educational purposes.

5. **Easy to Clean and Maintain** Borosilicate glass is non-porous and resistant to staining, making it straightforward to clean with solvents, detergents, or steam. This reduces maintenance time and extends the lifespan of the equipment.

6. **Standardized Dimensions** The consistent sizing (14/20 joint and 92mm joint) ensures a reliable fit, reducing the risk of leaks or improper connections during use.

7. **Safety** The thick walls of borosilicate glass provide structural integrity, minimizing the risk of breakage under normal operating conditions. This is particularly important in high-temperature applications.

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### **Cons**

1. **Limited Customization** The 9250-04 is a standard distillation finger with fixed dimensions. If you require specific modifications (e.g., different joint sizes, side arms, or custom shapes), you may need to purchase additional adapters or opt for a different model.

2. **Potential for Leaks** While borosilicate glass is durable, improper assembly or damaged joints can lead to leaks. Ensuring a proper seal with high-quality ground glass joints and lubricants (e.g., Apiezon or silicone-free grease) is essential to prevent this issue.

3. **Weight and Fragility** Although borosilicate glass is strong, it is still heavier than plastic alternatives. Improper handling can lead to cracks or breakage, especially if the glassware is dropped or subjected to sudden temperature changes.

4. **Compatibility with Non-Standard Equipment** If your distillation setup includes non-standard joints or components (e.g., custom flasks or non-14/20 connections), you may need additional adapters, which can add to the overall cost and complexity.

5. **Maintenance of Ground Glass Joints** Over time, ground glass joints can wear out or develop scratches, requiring periodic cleaning and polishing. Neglecting this maintenance can compromise the seal and functionality of the distillation finger.

6. **Cost Relative to Plastic Alternatives** While borosilicate glass is durable, plastic or PTFE distillation components are often cheaper for very small-scale or disposable applications. However, plastic is less suitable for high-temperature or corrosive environments.

7. **Learning Curve for Assembly** Properly assembling glassware requires practice to ensure tight, leak-free connections. Beginners may struggle initially with aligning joints and applying the correct amount of lubricant.

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### **Conclusion**

The Ace Glass 9250-04 distillation finger is a reliable, high-quality piece of equipment suitable for a wide range of distillation applications, from hobbyist use to small-scale production. Its durability, compatibility with standard laboratory glassware, and resistance to thermal and chemical stress make it a strong choice for users who prioritize longevity and performance. However, its fixed design and the need for proper maintenance may pose challenges for those seeking customization or ease of use.

For most home distillers, small-scale producers, or educational settings, the 9250-04 offers an excellent balance of functionality and affordability. If you require more flexibility or are working with highly specialized setups, you may need to supplement it with additional adapters or consider alternative models.

### **Recommendation**

If you are looking for a versatile, durable, and cost-effective distillation finger for general use, the Ace Glass 9250-04 is highly recommended. Ensure you invest in high-quality ground glass lubricant and take care to assemble and maintain the equipment properly to maximize its lifespan and performance. For users with very specific needs (e.g., custom joint sizes or extreme temperature ranges), evaluate whether additional components or alternative materials (such as high-grade PTFE) would better suit your requirements.

Details:

9250-04 Distillation Cold Finger 14/20 Joint 92mm Long Below Used, see photos -BJ.

part #: 925004 prices

• $37.99-$44.00

specifications plasticwarelabsuppy:

• brand: Ace Glass
• mpn: 9250-04
• model: Ace Glass Inc. 9250-04
• part type: Joint
• country of origin: United States

shipping plasticwarelabsuppy:

• class: Standard
• type: Fixed
• service: Standard
• cost: $0.00
• transit: 4-7 Days

offer plasticwarelabsuppy:

• started: May 29, 2026
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• best offers: True
• sold: 0

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general plasticwarelabsuppy:

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

returns plasticwarelabsuppy:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer
• method: Money back

seller plasticwarelabsuppy:

• # reviews: 3512
• city: Fargo, North Dakota
• rating: 99.9%

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