PYREX 70980 Vista Glass Flask Stopper 125 NO.5

( Brand: Pyrex ), ( Manufacturer Part Number: 70980 ), ( Part Type: Stopper ), ( Inventory Location: Fp 12-3 )

Review PYREX Vista 125 Ml Glass Flask Stopper No.5

The **Pyrex 70980 Vista 125 mL Glass Flask with No. 5 Stopper** is a meticulously crafted laboratory glassware essential designed for precision, durability, and versatility in scientific and analytical applications. Crafted from high-quality borosilicate glass (Pyrex), this flask combines exceptional thermal resistance with chemical inertness, making it ideal for a wide range of experiments, including titrations, dilutions, and reagent storage. Its sleek, **Vista** design features a **125 mL capacity** with a **graduated scale** etched directly onto the glass, allowing for accurate volume measurements with minimal parallax error, thanks to its clear, unobstructed viewing window. The **No. 5 ground-glass stopper** ensures a secure, airtight seal, preventing contamination and evaporation while maintaining flexibility for easy insertion and removal. The stopper s standard size guarantees compatibility with most laboratory equipment, including separatory funnels and adapters, enhancing its adaptability for various procedures. The flask s **smooth, polished surface** not only facilitates easy cleaning but also minimizes residue buildup, a critical factor in maintaining sterility and accuracy in sensitive experiments. Whether used in educational settings, pharmaceutical research, or industrial chemistry, this flask exemplifies reliability and precision, embodying the durability of Pyrex glassware while providing the clarity and functionality required for demanding laboratory work. Its robust construction and precise graduations make it a staple in any well-equipped scientific workspace.

**Pros and Cons of buying a Pyrex 70980 Vista 125 mL Glass Flask with No. 5 Stopper**

### **Pros**

1. **Durability and Heat Resistance** Pyrex glass is known for its high heat tolerance, making it ideal for laboratory use, baking, or chemical storage. It can withstand temperatures ranging from -40 C to 300 C, reducing the risk of cracking or breaking under thermal stress.

2. **Chemical Inertness** The borosilicate glass composition resists most acids, bases, and organic solvents, making it safe for storing or reacting with a wide range of substances without leaching contaminants.

3. **Precision and Clarity** The clear, thick-walled design allows for accurate measurements and easy visualization of contents, which is critical in laboratory settings.

4. **Reusability and Longevity** Unlike disposable plastic containers, Pyrex flasks are built to last for years with proper care, offering better long-term value.

5. **Standardized Size and Compatibility** The 125 mL capacity and No. 5 stopper size are common in laboratory equipment, ensuring compatibility with other glassware and laboratory setups.

6. **Sterilization-Friendly** Can be easily cleaned, autoclaved, or sterilized using common laboratory methods, making it suitable for microbiological or medical applications.

7. **Aesthetic and Professional Appearance** The sleek, uniform design enhances the visual appeal of laboratory work, which may be important for presentations or educational purposes.

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### **Cons**

1. **Fragility Compared to Plastic** Despite its durability, glass is more prone to breaking if dropped or subjected to sudden impacts, unlike plastic alternatives that may be more resilient.

2. **Weight** The flask is heavier than plastic counterparts, which can make handling and transport more cumbersome, especially for large quantities or frequent use.

3. **Cost** Pyrex glassware is generally more expensive upfront than disposable plastic flasks, though the long-term cost may be justified by its durability.

4. **Limited Flexibility** Unlike flexible plastic containers, glass flasks cannot be easily compressed or deformed, which may limit their use in certain applications requiring adaptability.

5. **Maintenance Requirements** Glassware requires careful cleaning to avoid scratches or residue buildup, which can affect performance over time. Scratches may also harbor bacteria or contaminants.

6. **Potential for Contamination** If not properly cleaned or stored, glass flasks can harbor residues from previous experiments, which may interfere with new procedures.

7. **Not Ideal for High-Pressure Applications** Unlike some plastic or metal containers, Pyrex is not designed for high-pressure environments, limiting its use in certain industrial or specialized laboratory settings.

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### **Conclusion**

The Pyrex 70980 Vista 125 mL glass flask with a No. 5 stopper is a high-quality, versatile tool that excels in laboratory, baking, or general chemical applications due to its heat resistance, chemical inertness, and durability. While it has some drawbacks such as fragility, weight, and higher cost these are often outweighed by its reliability and longevity, especially for professionals or serious hobbyists who prioritize precision and safety.

For **laboratory use**, this flask is an excellent investment due to its compatibility with standard procedures and resistance to contamination. For **home baking or general kitchen use**, it offers superior performance compared to plastic alternatives but may not be necessary if you already have adequate glassware. If you frequently handle harsh chemicals, high temperatures, or require sterile conditions, the Pyrex flask is a strong recommendation. However, if budget or convenience is a major concern, or if you need lightweight, disposable alternatives, plastic flasks may be more suitable.

Purchase the Pyrex 70980 Vista 125 mL flask with No. 5 stopper if you need a **durable, chemically resistant, and high-precision container** for laboratory work, chemical storage, or demanding culinary applications. It is particularly well-suited for educational settings, professional research, or any scenario where reliability and clarity are critical. If you are unsure about its necessity, consider testing it for a specific use case before committing to long-term use.

Details:

All lettering and numbers are perfect not fading or peeling. Free shipping is only available to lower 48 states. These are used, but in really good shape with no chips or cracks. Please review all photos before purchasing.

Good luck Bin# 26.

part #: 70980 prices

• $16.99-$40.00

specifications tubinglabsupplyu:

• brand: Pyrex
• mpn: 70980
• part type: Stopper
• inventory location: Fp 12-3

offer tubinglabsupplyu:

• options: Ship-to-home
• sold: 0
• started: February 2, 2026
• quantity: 2
• availability: In Stock

general tubinglabsupplyu:

• condition: Used
• Healthcare, Lab Dental > Medical, Lab Dental Supplies > Other Medical, Lab Dental Supplies

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• policy: No Returns

shipping tubinglabsupplyu:

• transit: 4-11 Days
• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS

seller tubinglabsupplyu:

• # reviews: 2340
• city: Warwick, Rhode Island
• rating: 99.8%

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