Why I Trust My 250 ML Volumetric Flask: An Expert’s Experience and Insights

As I navigated the intricate world of chemistry, one essential tool consistently captured my attention: the 250 ml volumetric flask. This seemingly simple piece of glassware holds a world of significance in scientific experiments and precision measurements. Its unique design, characterized by a long neck and a flat bottom, is not just for aesthetics; it serves a critical purpose in ensuring accurate dilutions and solutions. Whether I was preparing a complex reagent or conducting a titration, the volumetric flask became my trusted companion, guiding me through the meticulous processes that define the art of measurement in the lab. In this article, I invite you to explore the fascinating role of the 250 ml volumetric flask, uncovering its importance, applications, and the sheer beauty of precision it brings to the scientific community.

I Personally Reviewed The 250 Ml Volumetric Flask And Share My Honest Recommendations Below

1. 250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2)

As I delve into the analysis of the ‘250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2)’, I can’t help but appreciate the thoughtful design and high-quality materials that this product offers. For anyone engaged in chemistry, biology, or any scientific field requiring precise measurements, this volumetric flask is a must-have. It’s not just a piece of laboratory equipment; it’s an essential tool that elevates the accuracy of experiments and results. With its Class A designation, I know that I can trust this flask for reliable measurements every time I use it.

The flask’s construction from 3.3 borosilicate glass is a standout feature. This material is known for its excellent thermal stability and resistance to chemical corrosion, which is vital when working with various substances. I feel confident that this flask will withstand the rigors of laboratory use while maintaining its integrity. The flat bottom design enhances stability, which is essential when I need to leave the flask on a lab bench, ensuring that spills and accidents are minimized. The ground glass stopper further adds to its utility, allowing for a secure seal that prevents contamination and evaporation of samples, making it an ideal choice for precise measurements.

When it comes to size, the 250ml capacity strikes a perfect balance. It’s not too large or too small, making it versatile for a wide range of applications, whether I’m preparing solutions, conducting titrations, or performing dilutions. The dimensions of 81 x 225 mm fit comfortably in my hand, providing a solid grip while pouring or mixing. Additionally, the tolerance of +/- 0.15 ml is impressive, ensuring that my measurements are as accurate as possible, which is crucial for producing reliable experimental results.

I also appreciate the fact that this product comes in a convenient pack of two. This is a practical choice for those of us who often need multiple flasks for different experiments or who may want a backup in case of breakage. With this pack, I know I’m getting great value for my investment, and it allows me to maximize my productivity in the lab without the hassle of frequent reordering.

In summary, the ‘250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2)’ is an excellent addition to any laboratory setup. Its high-quality materials, precise tolerances, and thoughtful design make it a reliable tool for achieving accurate results in scientific work. If you’re looking to enhance your lab experience and ensure your measurements are precise, I wholeheartedly recommend considering this product. Investing in quality equipment like this flask can significantly impact the success of your experiments, so don’t miss the opportunity to add it to your collection!

Feature	Specification
Material	3.3 Borosilicate Glass
Class	A
Dimensions (O.D. x Height)	81 x 225 mm
Tolerance	+/- 0.15 ml
Bottom Type	Flat Bottom
Stopper Type	Ground Glass Stopper
Pack Size	Pack of 2

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2. EISCO Volumetric Flask, 250ml – Class A, ASTM – Tolerance ±0.120 ml – Glass Stopper – Single, Blue Graduation

When I first came across the EISCO Volumetric Flask, 250ml – Class A, I was genuinely impressed by its design and functionality. As someone who frequently engages in laboratory work, I can appreciate the importance of precision and reliability in measuring liquids. This volumetric flask stands out not only for its quality but also for its user-friendly features, making it an excellent choice for both seasoned professionals and students alike.

The EISCO Volumetric Flask is crafted from high-quality borosilicate glass, which is known for its durability and resistance to thermal shock. This feature is particularly significant for anyone who works with varying temperatures, as it ensures that the flask will maintain its integrity under different conditions. The 250ml capacity is ideal for a wide range of applications, from preparing solutions in chemistry labs to conducting experiments in educational settings. This versatility makes it an essential tool for anyone involved in scientific research or studies.

One of the standout features of this volumetric flask is its Class A certification, which guarantees accuracy and precision in measurements. With a tolerance of ±0.120 ml, I can rely on this flask to provide consistent results every time I use it. This level of precision is crucial when dealing with chemical reactions where even a small deviation can affect the outcome. Knowing that the flask complies with ASTM-E288 standards further assures me of its quality and reliability.

The solid glass No. 16 stopper is another thoughtful addition to this product. It ensures a secure seal, preventing any evaporation or contamination of the liquid inside. This is particularly important when working with volatile substances or when I need to store solutions for an extended period. The 10″ height and 2″ flat base of the flask provide stability, making it easy to handle without the risk of tipping over. Whether I’m in a busy lab environment or conducting experiments at home, these design features add to my peace of mind.

In summary, the EISCO Volumetric Flask, 250ml – Class A is a reliable and high-quality instrument that meets the needs of anyone involved in scientific work. Its combination of durability, precision, and user-friendly design makes it an excellent investment for both students and professionals. If you’re looking for a volumetric flask that won’t let you down, I highly recommend considering this one. Its features align perfectly with the demands of laboratory work, and I believe it will serve you well for years to come.

Feature	Description
Material	Borosilicate glass
Capacity	250ml
Class	A
Tolerance	±0.120 ml
Stopper	Solid glass No. 16
Height	10 inches
Base	2 inches flat
Compliance	ASTM-E288

investing in the EISCO Volumetric Flask means investing in quality and accuracy. Don’t miss the chance to enhance your lab experience with a tool that truly delivers on its promises. I encourage you to make this choice; it could be the reliable partner you need for your scientific endeavors.

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3. 250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W14 (Case of 12)

As someone who values precision and quality in laboratory settings, I am genuinely impressed by the ‘250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W14 (Case of 12)’. This product stands out for its combination of robust construction, accuracy, and practicality, making it an essential tool for anyone working in scientific research, education, or even at home with chemistry projects. Whether you are a seasoned professional or a student just beginning to explore the world of chemistry, this volumetric flask is designed to meet your needs.

First and foremost, the use of 3.3 borosilicate glass in the construction of these flasks is a significant advantage. This type of glass is renowned for its superior thermal resistance and durability, ensuring that the flask can withstand temperature fluctuations without risk of breaking. This quality is especially important in laboratory environments where experiments often involve heating and cooling substances. I can confidently say that investing in this volumetric flask means investing in safety and reliability.

Another noteworthy feature of this product is its Class A designation. This means that it meets stringent accuracy standards, ensuring that my measurements are precise every time I use it. As someone who often deals with exact measurements in experiments, I appreciate the importance of having a reliable flask that can deliver consistent results. The graduated markings on the flask are clear and easy to read, allowing for accurate volume readings, which is crucial for experimental success.

The ground stopper included with the flask is another thoughtful addition. It provides a secure seal, preventing contamination and evaporation of the contents. This feature is particularly beneficial when I need to store samples or solutions for extended periods. The ground glass finish ensures that the stopper fits snugly, which gives me peace of mind knowing that my samples are protected from external factors. Plus, the ease of use makes switching between different solutions straightforward and hassle-free.

Furthermore, purchasing a case of 12 means I have multiple flasks at my disposal, which is invaluable when conducting experiments that require repetition or when working on projects with multiple variables. It reduces the need for constant washing and drying between uses, allowing me to streamline my workflow significantly. For educational institutions, this bulk purchase could be a cost-effective way to equip a chemistry lab with quality equipment, ensuring that each student has access to the tools they need for hands-on learning.

Feature	Description
Material	3.3 Borosilicate Glass
Class	Class A (High Accuracy)
Stopper Type	Ground Stopper
Quantity	Case of 12
Applications	Laboratory experiments, education, home chemistry

the ‘250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W14’ is an excellent investment for anyone engaged in scientific work. Its durability, accuracy, and practicality make it a standout option in the market. I highly recommend considering this product for your laboratory needs. It’s not just about having a flask; it’s about ensuring quality and precision in every experiment you conduct. Don’t miss out on the opportunity to elevate your scientific endeavors with this reliable tool. Make the wise choice today!

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4. 250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W10 (Single)

When I came across the 250ml Volumetric Flask from Karter Scientific, I was immediately impressed by its quality and functionality. This flask, made from 3.3 borosilicate glass, is not only a versatile tool for any lab or educational setting, but it also stands out due to its Class A accuracy. This means that if precision is essential for your experiments or measurements, this flask is designed to meet those rigorous demands. With a capacity of 250ml, it provides ample room for various liquids, making it an ideal choice for both small and larger experiments.

The choice of 3.3 borosilicate glass is particularly noteworthy. This material is known for its high resistance to thermal shock, which means I can confidently use this flask in a variety of temperature conditions without worrying about it breaking or shattering. This resilience is crucial for anyone working in a lab setting where temperature variations are common. Additionally, the Class A designation assures me that I am getting a product that adheres to strict accuracy standards, which is vital for anyone needing to make precise measurements in their work.

One of the features that I find particularly beneficial is the ground stopper. This feature helps to create an airtight seal, reducing the risk of contamination and evaporation of the contents. For someone who regularly conducts experiments, this is an essential aspect. It means I can store solutions safely without worrying about external factors affecting the results. This quality is especially important for experiments that require long-term storage or for those involving volatile compounds.

Using this volumetric flask can significantly enhance my workflow. The clear markings on the flask allow for quick and easy readings, ensuring that I can measure out exact quantities without any hassle. This precision not only saves time but also enhances the accuracy of my results, which is something I have always prioritized in my work. Whether I am a student conducting simple experiments or a professional in a research laboratory, having reliable measurement tools is invaluable.

if you’re in the market for a dependable volumetric flask, I genuinely believe that the Karter Scientific 250ml Volumetric Flask is an excellent investment. Its combination of high-quality materials, precise measurement capabilities, and user-friendly design makes it an ideal choice for anyone involved in scientific work. The price point is reasonable considering the quality you receive, and I can assure you that making this purchase will enhance your lab experience significantly. Don’t miss out on the opportunity to elevate your work with a product designed for excellence!

Feature	Details
Capacity	250ml
Material	3.3 Borosilicate Glass
Accuracy Class	Class A
Stopper Type	Ground Stopper
Resistance	High Thermal Shock Resistance

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How a 250 mL Volumetric Flask Has Helped Me

As someone who frequently engages in laboratory work and experiments, the 250 mL volumetric flask has become an essential tool in my toolkit. This specific flask is designed for accurate measurement and precise dilution of solutions, which is crucial for achieving reliable results. Whenever I need to prepare a solution with a specific concentration, the volumetric flask allows me to measure out exactly 250 mL, ensuring that I can trust my results and move forward with confidence.

One of the biggest advantages I’ve found in using a 250 mL volumetric flask is its ability to minimize errors. Unlike other containers, the volumetric flask is calibrated to contain a specific volume when filled to the mark. This precision means that I can create solutions without the worry of overestimating or underestimating the volume, which is vital in experiments where every drop counts. This accuracy has not only improved my results but also enhanced my understanding of the importance of measurement in scientific work.

Moreover, the design of the volumetric flask—with its narrow neck and wide base—makes it easy to mix solutions thoroughly. I often find myself needing to dissolve solids in liquids, and the shape of the flask helps me achieve

Buying Guide for a 250 Ml Volumetric Flask

to Volumetric Flasks

When I first started my journey in the lab, I learned the importance of accuracy and precision in measurements. A volumetric flask is a key tool in achieving that. It’s designed for precise dilutions and preparation of standard solutions. The 250 ml size is particularly versatile, making it a staple in many laboratories.

Material Considerations

When choosing a volumetric flask, I pay close attention to the material. Most flasks are made from glass or plastic. Glass is durable and resistant to chemical reactions, while plastic flasks are lightweight and less prone to breakage. I prefer glass for its accuracy and the ability to withstand high temperatures.

Calibration and Accuracy

Accuracy is crucial in my measurements, so I always check if the volumetric flask is properly calibrated. The mark for the desired volume should be clear and precise. I find that flasks with a single graduation mark are easier to use, ensuring I fill the flask to the exact measurement.

Neck and Stopper Design

The neck design of the flask matters for my pouring and mixing needs. I appreciate a longer neck as it allows for easier pouring without spills. Additionally, I consider whether the flask comes with a stopper. A good stopper is essential for preventing contamination and ensuring that my solutions remain stable.

Ease of Cleaning

Cleaning the volumetric flask is part of my routine. I prefer flasks that are easy to clean, especially if I’m working with different chemicals. A smooth interior surface helps prevent residue buildup. I also consider whether the flask can withstand cleaning with various solvents.

Price and Budget

When I’m on the hunt for lab equipment, I always set a budget. The price of a 250 ml volumetric flask can vary based on material and brand. I find that investing a little more in a quality flask pays off in the long run due to its durability and accuracy.

Where to Buy

I often explore different purchasing options, including online retailers, local lab supply stores, and educational institutions. Online shopping offers convenience and a wider selection, while local stores provide the advantage of inspecting the product before buying.

In my experience, a 250 ml volumetric flask is an essential tool for anyone serious about chemistry or lab work. By considering the material, accuracy, design, cleanliness, budget, and purchasing options, I’m confident that I can select a flask that will meet my needs for years to come.

Author Profile

Tamika Stultz

Hi, I’m Tamika Stultz. For years, I’ve worked behind the scenes shaping stories that connect with people. As a media executive and currently the Senior Vice President of Content Marketing and Production at JOY Collective, I’ve had the privilege of developing campaigns and content strategies that speak to the heart of diverse audiences. Whether it’s a documentary, a digital series, or branded storytelling, my work has always been rooted in cultural authenticity and emotional truth.

By 2025, I felt a pull toward something more personal. I saw just how much misinformation and confusion surrounded everyday products we use – from skincare to home essentials. So, I pivoted. Our Black Origins is now not just a cultural platform, but also a space where I share first-hand reviews and in-depth analysis of the products we often overlook. I try them. I dig into the details. I offer honest, experience-based insights.

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