QWORK Glass 250ml Flat Bottom Boiling Flask with 24/40 Joint

Description

Product Overview

The QWORK 250ml flat bottom boiling flask is engineered for laboratory professionals who demand reliability and precision. Constructed from premium borosilicate glass, the flask tolerates rapid temperature changes, making it suitable for direct flame heating, oil baths, and steam applications. Its flat bottom design allows the flask to rest securely on any stable surface without the need for a support ring, simplifying setup and reducing clutter on the bench. The 24/40 standard taper outer joint provides a universal connection point for a wide range of distillation adapters, condensers, and other laboratory accessories, ensuring compatibility across most standard lab equipment. With a clear volume marking, users can quickly verify liquid levels, and the thick wall construction adds an extra layer of safety against breakage during vigorous boiling or sudden cooling. The flask’s dimensions—approximately 7.01 x 4.88 x 3.98 inches—fit comfortably within standard storage cabinets while still offering a generous 250 ml capacity for medium‑scale experiments.

Usage

In a typical chemistry or biology laboratory, the QWORK 250ml boiling flask serves as a versatile vessel for a variety of procedures. Whether you are performing simple reflux, preparing solutions, or conducting a fractional distillation, the flask’s robust construction and precise joint dimensions ensure a leak‑free connection that maintains system integrity. The flat bottom allows the flask to be placed directly on a heating mantle, Bunsen burner, or hot plate, providing even heat distribution and minimizing the risk of tipping. Its resistance to both high and low temperatures makes it ideal for processes that involve rapid heating followed by immediate cooling, such as quenching reactions or crystallization steps. The clear glass body also enables easy visual monitoring of reaction progress, color changes, and precipitate formation, which is essential for troubleshooting and ensuring reproducibility. Additionally, the flask can be used in educational settings, giving students hands‑on experience with standard laboratory glassware while reinforcing best practices for safety and technique.

Why Choose Us

Choosing the QWORK 250ml flat bottom boiling flask means investing in a product that combines durability, precision engineering, and cost‑effectiveness. QWORK has a reputation for delivering laboratory glassware that meets stringent quality standards, and each flask undergoes rigorous inspection to verify joint conformity, wall thickness, and optical clarity. The borosilicate composition not only resists chemical corrosion but also provides superior thermal shock resistance compared to ordinary soda‑lime glass, extending the lifespan of the flask even under demanding experimental conditions. Our commitment to customer satisfaction includes responsive technical support, a clear return policy, and detailed usage guidelines that help users maximize the flask’s performance. By selecting this flask, laboratories can reduce the frequency of replacements, lower overall consumable costs, and maintain a consistent workflow without interruptions caused by equipment failure.

Key Features

• High‑quality borosilicate glass resists thermal shock and chemical attack for long‑term use.
• Flat bottom design provides stable placement on heating devices without additional holders.
• 24/40 standard taper outer joint ensures universal compatibility with distillation adapters and accessories.
• Clear volume markings enable quick and accurate measurement of liquids during experiments.
• Responsive customer support and easy return process give confidence in every purchase.

FAQ

Can this flask be used with an open flame?

Yes, the flask is made from borosilicate glass, which is designed to withstand direct exposure to open flames and rapid temperature changes without cracking.

What does the 24/40 joint refer to?

The 24/40 designation describes the standard taper outer joint size, allowing the flask to connect securely with a wide range of laboratory adapters, condensers, and other glassware that follow the same standard.

Is the flask suitable for both heating and cooling processes?

Absolutely. Its high thermal shock resistance makes it ideal for procedures that involve heating a solution and then quickly cooling it, such as quenching reactions or crystallization.

How do I ensure a leak‑free connection when attaching accessories?

Make sure the joint surfaces are clean and dry, align the taper correctly, and gently twist the components until they seat firmly. Using PTFE tape on the joint can provide an extra seal if needed.

What is the warranty or return policy for this product?

QWORK offers a standard warranty against manufacturing defects and a straightforward return process within the specified return window. For detailed information, contact our customer service team.