Eisco Borosilicate Glass Filtering Flask 5000mL Lab Use

Description

Product Overview

The Eisco filtering flask is a high-capacity laboratory essential designed for reliable performance in demanding environments. Constructed from heavy-duty borosilicate 3.3 glass, it offers superior strength and resistance to thermal shock and breakage. With a 5000mL capacity, this flask includes white printed graduation lines every 500mL for precise measurements and an inner opening diameter of 52mm, accommodating a #11 stopper (not included). Its integral barbed side arm facilitates easy attachment of vacuum tubing, while the flat inside bottom allows seamless use with rotating stir bars. Dimensions are 10 x 10 x 16.5 inches, and it weighs 4.4 pounds, making it sturdy yet manageable for various applications.

Usage

This filtering flask is ideal for professional laboratories, educational institutions, and home science setups where vacuum filtration is required. It excels in processes such as sample preparation, chemical separations, and environmental testing, providing a secure and efficient solution for handling liquids under reduced pressure. Target users include researchers, students, and hobbyists who need a durable tool for accurate and repeatable experiments. Its design supports a wide range of scientific disciplines, from chemistry and biology to industrial quality control.

Why Choose Us

Eisco filtering flasks stand out due to their industrial-grade borosilicate glass construction, which ensures long-term reliability and safety under vacuum conditions. Unlike standard glassware, the heavy-walled design minimizes the risk of implosion, providing peace of mind during high-pressure applications. The brand’s commitment to quality is reflected in precise manufacturing, including flat bottoms for optimal stir bar performance and clear graduation markings for accuracy. This product combines professional laboratory standards with accessibility, making it a trusted choice for diverse users seeking uncompromised performance.

Key Features

• Industrial-strength borosilicate 3.3 glass for exceptional durability and breakage resistance
• 5000mL capacity with clear white graduation lines every 500mL for easy measurement
• Integral barbed side arm for secure vacuum tubing connections without leaks
• Heavy-walled construction to withstand pressure variations during vacuum operations
• Flat inside bottom compatible with rotating stir bars for efficient mixing and homogenization

FAQ

What is the material of this filtering flask?

The flask is made from borosilicate 3.3 glass, known for its high thermal and mechanical resistance, making it suitable for rigorous laboratory use.

Can I use this flask with a magnetic stirrer?

Yes, the flat inside bottom is designed to work seamlessly with rotating stir bars, allowing for effective mixing on magnetic stirrers.

What stopper size is compatible with the flask opening?

The inner diameter at the opening is 52mm, which accommodates a standard #11 stopper, though it is not included with the product.

Is this flask safe for vacuum applications?

Absolutely, the heavy-walled borosilicate glass is engineered to handle pressure under vacuum, reducing the risk of implosion during filtration processes.

Where can I use this filtering flask?

It is versatile for professional labs, classrooms, garages, and home settings, supporting tasks like chemical filtration, sample analysis, and educational demonstrations.