
( Brand: Synthware Glass ), ( Manufacturer Part Number: S161530 ), ( Part Type: Stopcock ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory )
The **Synthware Glass S161530 Stopcock with Teflona T-Bore** is a precision-engineered valve designed for laboratory and industrial applications where reliability, chemical resistance, and low dead volume are paramount. This stopcock features a **2mm T-bore** (inner diameter) and a **15/23 male-to-female glass joint**, making it ideal for use in glassware setups requiring high flow rates while minimizing turbulence and contamination. The **Teflona (PTFE) plug** ensures exceptional chemical compatibility, resisting corrosion from acids, bases, solvents, and organic compounds, which makes it suitable for a wide range of experiments from organic synthesis and chromatography to pharmaceutical and analytical chemistry. The **ground glass joints** are precision-machined to provide a secure, leak-proof seal, reducing the risk of spills or cross-contamination in sensitive procedures. The stopcock s **smooth, low-friction operation** allows for precise control of fluid flow, whether adjusting solvent delivery in a distillation setup or regulating gas flow in a reaction vessel. Its **durable borosilicate glass construction** ensures thermal stability and resistance to thermal shock, making it safe for use with high-temperature applications. Whether integrated into a custom glass manifold, a chromatography system, or a laboratory-scale reactor, this stopcock delivers the durability and performance demanded by demanding scientific workflows.
### **Pros and Cons of buying a Synthware Glass S161530 Stopcock (Teflona T-Bore 2mm, 15/23)**
#### **Pros:**1. **High-Quality Construction** The Synthware stopcock is made from borosilicate glass (Type 3.3), which is durable, resistant to thermal shock, and chemically inert. This ensures longevity and reliability in laboratory settings.
2. **Teflon-Coated Valve** The Teflona (Teflon-coated) valve reduces friction, making it easier to operate, especially when dealing with viscous or particulate samples. It also minimizes the risk of contamination from the valve material.
3. **T-Bore Design** The T-bore (T-shaped bore) reduces dead volume, which is beneficial for precise flow control and minimizes sample loss during transfers. This is particularly useful in chromatography, synthesis, and analytical work.
4. **Standardized Size (15/23 Joints)** The 15/23 ground glass joints are industry-standard, ensuring compatibility with most glassware and adapters in laboratory setups. This makes it easy to integrate into existing systems.
5. **Corrosion Resistance** The Teflon coating and borosilicate glass resist corrosion from most acids, bases, and organic solvents, making it suitable for a wide range of chemical applications.
6. **Durability** The reinforced glass construction and metal reinforcement (if present) provide structural integrity, reducing the risk of breakage during use.
7. **Compatibility with Vacuum and Pressure** The stopcock can handle moderate vacuum and pressure applications, though extreme conditions may require additional reinforcement or alternative materials.
---
#### **Cons:**1. **Potential for Leaks** Over time, the ground glass joints (15/23) may develop leaks if not properly lubricated or if the joints become misaligned. This requires regular maintenance with stopcock grease.
2. **Manual Operation** Unlike solenoid or motorized valves, this stopcock requires manual turning, which can be inconvenient for automated or high-throughput processes.
3. **Limited Temperature Range** While borosilicate glass is heat-resistant, extreme temperatures (e.g., near melting points of certain solvents) may still pose risks, especially if the Teflon coating degrades.
4. **Maintenance Requirements** The Teflon coating may wear out over time, requiring occasional replacement or reapplication. The ground glass joints also need periodic cleaning and relubrication.
5. **Not Ideal for High-Pressure Applications** While it handles moderate pressure, it is not designed for high-pressure systems (e.g., above 10-15 psi without additional reinforcement).
6. **Cost Compared to Alternatives** High-quality glass stopcocks like this one are more expensive than plastic or metal alternatives, though they offer superior chemical resistance and durability.
7. **Breakage Risk** Despite its strength, glassware can still shatter if dropped or subjected to thermal shock (e.g., rapid temperature changes). Care must be taken during handling.
---
### **Conclusion:**The **Synthware Glass S161530 Stopcock (Teflona T-Bore 2mm, 15/23)** is a **high-quality, reliable choice** for laboratories requiring precise flow control, chemical resistance, and low dead volume. Its **Teflon coating, borosilicate glass construction, and T-bore design** make it well-suited for **synthesis, chromatography, and analytical chemistry**, where contamination and dead space are critical concerns.
However, its **manual operation, maintenance needs, and potential for leaks** may be drawbacks for users seeking **automation or extreme durability**. If these factors are not dealbreakers, this stopcock is an excellent investment for **precision and longevity** in laboratory applications.
### **Recommendation:**- **Buy if:** You need a **durable, chemically resistant stopcock** for **synthesis, chromatography, or general lab use**, and you are willing to perform **regular maintenance (lubrication, cleaning)**. The T-bore and Teflon coating justify the cost for applications where **minimal dead volume and contamination resistance** are priorities.
- **Consider alternatives if:** You require **automation, high-pressure handling, or extreme temperature resistance**, in which case **metal or plastic stopcocks (e.g., PTFE or stainless steel)** may be more suitable.
- **Best for:** **Academic labs, pharmaceutical research, organic synthesis, and analytical chemistry** where **glassware integrity and low dead volume** are essential.
For most **standard laboratory applications**, this stopcock is a **strong, well-engineered choice** that balances performance and reliability.
Shipped with USPS Ground Advantage. Synthware Glass Stopcock, 1:5 TEFLONa, T-BORE, 2mm, 15. Condition is New.