EISCO 500ml Volumetric Flask ASTM A Borosilicate Interchangeable

Description

Product Overview

The EISCO 500ml Volumetric Flask is engineered to meet the rigorous standards of ASTM Class A laboratory glassware, delivering a tolerance of ±0.20 ml across its calibrated range. Constructed from high‑quality borosilicate glass, the flask offers exceptional resistance to thermal shock, allowing it to endure rapid temperature changes without compromising structural integrity. The single white graduation mark provides a clear visual reference for accurate volume measurement, while the size‑19 polypropylene stopper is interchangeable, ensuring a tight, leak‑free seal during mixing, heating, or storage. Designed for both professional laboratories and educational settings, this flask balances durability with precision, making it a reliable tool for titration, solution preparation, and analytical procedures.

Usage

Whether you are conducting quantitative chemical analyses in a research laboratory, preparing standard solutions for a university chemistry class, or performing field measurements in a remote testing site, the EISCO 500ml Volumetric Flask adapts to a wide range of applications. Its robust borosilicate composition tolerates autoclaving and microwave heating, enabling sterilization and rapid temperature equilibration. The interchangeable stopper allows easy replacement if needed, and its polypropylene material is chemically inert, preventing interaction with most solvents and reagents. Users appreciate the clear graduation line for quick visual verification, reducing the time spent on measurement and minimizing the risk of error. The flask’s compact dimensions (4 × 4 × 10.5 inches) make it convenient to store on bench tops, in cabinets, or within portable kits for on‑site analysis.

Why Choose Us

EISCO Laboratories has a long‑standing reputation for manufacturing laboratory equipment that adheres to the highest quality standards. Each volumetric flask undergoes a multi‑stage inspection process, including dimensional verification, glass integrity testing, and stopper fit assessment, ensuring that every unit shipped meets the ASTM Class A specification. The use of borosilicate glass not only provides superior heat resistance but also offers excellent chemical durability, allowing the flask to withstand aggressive acids, bases, and organic solvents without degradation. Our commitment to customer satisfaction extends beyond product delivery; we provide responsive technical support, detailed usage guidelines, and a straightforward warranty policy that covers manufacturing defects. By choosing the EISCO 500ml Volumetric Flask, you benefit from a product that combines precision engineering, reliable performance, and a service network dedicated to supporting your scientific endeavors.

Key Features

• ASTM Class A tolerance of ±0.20 ml ensures high‑precision measurements for critical experiments.
• Durable borosilicate glass resists thermal shock and chemical corrosion, extending product lifespan.
• Interchangeable size‑19 polypropylene stopper provides a secure, leak‑free seal for mixing and storage.
• Single white graduation mark simplifies volume reading, reducing user error and speeding workflow.
• Comprehensive after‑sales support and warranty give confidence in long‑term reliability.

FAQ

What does ASTM Class A tolerance mean for my experiments?

ASTM Class A tolerance indicates that the flask’s volume deviation is limited to ±0.20 ml across its calibrated range. This level of accuracy is essential for quantitative analyses where small volume errors can significantly affect results, such as in titration, standard solution preparation, and analytical chemistry protocols.

Can the flask be used with aggressive chemicals?

Yes. The borosilicate glass construction offers excellent chemical durability, allowing the flask to safely contain most acids, bases, and organic solvents without etching or weakening the material. However, it is advisable to avoid prolonged exposure to hydrofluoric acid, which can attack glass.

Is the stopper compatible with other EISCO flask sizes?

The size‑19 polypropylene stopper is designed specifically for flasks that accept a 19 mm opening, which includes the 500ml model and several other EISCO volumetric flasks in the same series. It can be interchanged among these compatible sizes, providing flexibility for laboratories that use multiple flask capacities.

How should I clean and maintain the flask for optimal performance?

After each use, rinse the flask with distilled water to remove residual chemicals. For thorough cleaning, the flask can be autoclaved or placed in a microwave for sterilization. The polypropylene stopper should be inspected for wear and replaced if it shows signs of damage. Store the flask in a protective case to prevent accidental impacts that could chip the glass.

What warranty or support does EISCO provide?

EISCO offers a one‑year limited warranty covering manufacturing defects. If you encounter any issues, our technical support team is available to assist with troubleshooting, replacement parts, or guidance on proper usage. Detailed documentation and user manuals are also provided to help you get the most out of your volumetric flask.