QiMan Borosilicate Lab Flask Heavy Wall 25ml

Description

Product Overview

The QiMan laboratory flask is crafted from premium heavy‑wall borosilicate glass, renowned for its high thermal shock resistance and chemical durability. Each flask is hand‑blown, ensuring uniform wall thickness and a bubble‑free interior for consistent performance. The smooth, transparent body allows easy observation of reactions, while the frosted delicate mouth and thin neck design minimize solution spillage and provide a reliable seal. Available in sizes from 25 ml to 500 ml, each unit features the 19/22 center and 14/20 or 19/22 side joint configuration, catering to a variety of laboratory setups.

Usage

Designed for chemists, researchers, and educators, this flask excels in distillation, reflux, and heating applications where temperature stability is critical. Its robust construction makes it suitable for high‑temperature processes, such as solvent recovery, sample preparation, and analytical testing. The clear body facilitates real‑time monitoring of reaction progress, while the precision joint ensures compatibility with standard lab adapters and condensers.

Why Choose Us

QiMan combines centuries‑old glassblowing artistry with modern quality controls to deliver laboratory glassware that meets stringent industry standards. Each flask undergoes rigorous inspection for thickness uniformity, clarity, and joint integrity. Our commitment to customer satisfaction includes responsive support for any damage concerns, ensuring you receive a flawless product ready for immediate use.

Key Features

• Heavy‑wall borosilicate glass for superior thermal shock resistance
• Smooth, high‑transparency body for easy observation of reactions
• Frosted, thin‑neck mouth provides excellent sealing and spill prevention
• Hand‑blown construction ensures uniform thickness and bubble‑free interior
• Multiple sizes and joint configurations to fit diverse laboratory equipment

FAQ

What temperature range can the flask withstand?

The borosilicate composition allows safe use up to 500 °C, making it ideal for high‑heat distillation and reflux processes.

Are the flasks compatible with standard lab adapters?

Yes, the 19/22 center joint and 14/20 or 19/22 side joints match common laboratory glassware, ensuring seamless integration with condensers, stoppers, and clamps.

How should I clean and maintain the flask?

Rinse with distilled water after each use and, if needed, clean with a mild detergent. Avoid abrasive pads to preserve the smooth surface and frosted mouth.

What is the warranty policy?

QiMan offers a satisfaction guarantee; if the flask arrives damaged, contact us for a replacement or refund.

Can I use the flask for both organic and aqueous solutions?

Absolutely. The chemical‑resistant borosilicate glass is suitable for a wide range of solvents and reagents.