
( Brand: Pyrex ), ( Manufacturer Part Number: 70022-500 ), ( Part Type: Cylinder ), ( Intended Use/discipline: Laboratory )
The **Pyrex 70022-500 Vista 500 mL TC (Total Capacity) Glass Graduated Cylinder** is a precision-engineered laboratory instrument designed for accurate and reliable liquid measurement in scientific, educational, and industrial settings. Crafted from high-quality **borosilicate glass (Type I)**, this cylinder offers exceptional durability, resistance to thermal shock, and chemical inertness, ensuring long-term performance even under demanding conditions. With a **500 mL total capacity**, it provides a versatile range for handling moderate to large volumes of liquids, making it ideal for applications such as titrations, dilutions, and volumetric transfers where precision is critical. The **graduated markings** are etched directly into the glass, offering clear, easy-to-read measurements with minimal parallax error, thanks to its **tall-form design and wide viewing angle**. The **TC (Total Capacity) calibration** means the cylinder is marked to indicate the exact volume of liquid it can hold when filled to the top, eliminating ambiguity in readings. Its **smooth, polished surface** reduces liquid adhesion, allowing for more accurate pours and transfers, while the **flat base** ensures stability on laboratory benches. Whether used in chemistry labs, biology research, or quality control environments, this graduated cylinder delivers consistent performance with a combination of clarity, strength, and precision, making it an indispensable tool for any scientist or technician.
**Pros and Cons of buying a Pyrex 70022-500 Vista 500 mL Graduated Cylinder (TC 20 Glass)**
### **Pros:**1. **Durability and Quality** Pyrex is known for its borosilicate glass, which is highly resistant to thermal shock, meaning it can withstand rapid temperature changes without cracking. This makes it ideal for laboratory use, including heating and cooling applications.
2. **Precision and Accuracy** The graduated markings are etched directly into the glass, providing clear and consistent measurements. The 500 mL capacity with 1 mL divisions (TC 20) allows for precise liquid volume measurements, which is essential in scientific and educational settings.
3. **Chemical Resistance** Borosilicate glass is inert to most acids, bases, and organic solvents, making it suitable for a wide range of chemical experiments without reacting or leaching contaminants.
4. **Long Lifespan** Due to its robust construction, this cylinder is designed to last for years with proper care, reducing the need for frequent replacements.
5. **Versatility** The 500 mL size is practical for a variety of laboratory tasks, including titrations, dilutions, and general liquid handling in chemistry, biology, and other sciences.
6. **Easy to Clean** Glass is non-porous, so it can be thoroughly cleaned with soap, water, and mild detergents. It is also resistant to microbial growth, which is beneficial for sterile applications.
7. **Compatibility with Lab Equipment** The standard design fits well with most laboratory glassware adapters, clamps, and other apparatuses, making it easy to integrate into existing setups.
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### **Cons:**1. **Fragility Despite Durability** While borosilicate glass is more resistant to thermal shock than soda-lime glass, it is still brittle. Dropping it or subjecting it to sudden impacts can cause it to shatter, potentially creating a safety hazard.
2. **Weight** Glass cylinders are heavier than plastic alternatives, which can be cumbersome for frequent handling, especially in large quantities or by individuals with limited strength.
3. **Cost** Compared to plastic or lower-quality glass cylinders, Pyrex products are more expensive. For budget-conscious buyers or those with minimal needs, this may be a significant drawback.
4. **Maintenance of Etched Marks** Over time, the etched graduations can wear down or become less visible due to frequent use or cleaning. This may require occasional recalibration or replacement of the cylinder.
5. **Limited Flexibility** Unlike plastic cylinders, which can sometimes be more flexible or impact-resistant, Pyrex is rigid and cannot bend or deform, which may limit its use in certain non-standard applications.
6. **Storage and Transport** Glassware requires careful handling during storage and transport to avoid breakage. It may need to be stored in protective cases or racks, adding to the overall logistics.
7. **Potential for Contamination** While borosilicate glass is chemically resistant, improper cleaning or exposure to certain substances can still lead to residual contamination, which may affect experimental results if not cleaned thoroughly.
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### **Conclusion:**The Pyrex 70022-500 Vista 500 mL graduated cylinder is a high-quality, reliable tool for laboratory use, particularly in settings where precision, chemical resistance, and durability are critical. Its borosilicate glass construction ensures longevity and accuracy, making it a valuable investment for educational institutions, research labs, and professional chemists. However, its weight, cost, and fragility may pose challenges depending on the user s needs and environment.
For users who prioritize accuracy, safety, and long-term performance in a controlled laboratory setting, this cylinder is highly recommended. In contrast, those working in low-budget environments, handling highly corrosive or abrasive substances, or requiring frequent, heavy use may need to weigh the pros and cons carefully. If cost is a major concern, alternatives like plastic or lower-grade glass cylinders might be considered, though they may lack the durability and precision of Pyrex.
**Final Recommendation:**If you require a durable, accurate, and chemically resistant graduated cylinder for laboratory or educational purposes, the Pyrex 70022-500 Vista 500 mL cylinder is an excellent choice. Invest in it if your work demands reliability and precision, and ensure proper handling to maximize its lifespan. For casual or non-laboratory use, evaluate whether the added benefits justify the cost.
For your consideration is an unused glass graduated cylinder marked Pyrex Vista 70022-500 500mL TC 20 C Class.